Best Cobalt M35 Countersink Bits

VALYRIANTOOL 1/8″ Cobalt Drill Bits(20PCS), M35 HSSCO High Speed Steel Double Ends Stubby Body Twist Drill Bit Set for Hardened Metal, Stainless Steel, Cast Iron, Plastic and Wood

【20PCS 1/8″ Cobalt Drill Bits】20PCS – 1/8″(Drilling Diameter) x5/8″(Flute Length)x2″(Overall Length) Metal Drill Bits. This drill bit fits the majority of power drill currently on the market..
【M35 Cobalt High Speed Steel】Industry grade M35 high speed steel drill bit set, harder than 4241 HSS used in other similar drill bits set. These drill bits also contain 5% Cobalt, which increases wear-resistance and durability..
【Fully Ground Process & 135° Split Point】Fully ground spiral groove design clears particles quickly, decreases friction and heat for a faster and cooler drilling performance. 135° split point with straight shank prevents walking and makes drilling precise and faster. No center punch is needed..
【Multiple Application】Perfectly suitable for cutting through Hard Metal such as Stainless Steel, Steel, Sheet Metal and Cast Iron as well as Plastic, Aluminum Alloy, Wood and Other Softer Metals. Pay attention to speed, pressure and heat control during drilling..
【90 Days Warranty】If you are not fully satisfied for any reason, please contact us for 100% refund or replacement..

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Hymnorq Jobber Twist Drill Bits 15pc Set, Fractionsh Inch Size 1/16 to 3/8 in Premium Index Case, M35 Cobalt Steel, 135 Degree Split Point, For Stainless Steel Iron and Other Metals

COBALT STEEL - Manufactured from M35 cobalt steel, with molybdenum and cobalt added to create a hardened heat-resistant alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, with up to twelve times compared with an average HSS drill bit..
SELF CENTERING - The 135°quick-cut split point is self-centering and can penetrate quickly with less pressure. The bits will not "walk" or "wander". Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks. (The 4 small bits are 118 degree chisel pointed..
15PC SET - The set includes 15pcs (12different sizes: 2 pieces of 1/16", 3/32",1/8" bits, and 1 piece of 5/64", 7/64", 9/64", 5/32", 3/16", 7/32", 14", 5/16" and 3/8" bit) of fractional inch size M35 grade cobalt steel twist drill bits, packed in a hard ABS plastic indexed case. Manufactured to German DIN338 standard..
METALWORKING - Particularly successful in cutting through hard metals(hardness less than HRC38°) such as stainless steel and cast iron, although they can be used for softer materials like copper and aluminium, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate..

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GMTOOLS 1/4 inch Cobalt Drill Bits, M35 HSS, 135 Degree Tip, Jobber Length Twist Drill Bit Set for Hard Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Storage Case, Pack of 10

Packaging: 10 pcs Cobalt Drill Bit Set , Diameter 1/4”(Dia 6.35mm) , Flute Length 2-3/4”(69.85mm) , in a sturdy plastic case for easy storage and carrying..
1/4″ M35 Material Cobalt drill bits: 1/4″ drill bits for metal is made of Industry grade M35 High Speed Steel, containing 5% cobalt, which increases drill bit wear-resistance, durability and heat resistance..
135 Degree Tip Twist Design: precise positioning, lower pressure, fast penetration. Equipped with a straight shank to prevent walking, making drilling more precise and fast,clears particles quickly, decreases friction and heat..
Feature：cobalt drill bit’s hardness is uniform so that can be repeatedly sharpened without damaging the cutting edge, suit for hard metals, stainless steel, cast iron, galvanized pipe, high temperature alloy, titanium alloy, woods and hard plastics..
Quality Commitment: If for any reason you are not satisfied with your purchase, please contact us. We provide 30-day money back. 100% Satisfaction Guarantee for risk-free shopping!.

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MACXCOIP Cobalt Drill Bit Set, 115Pcs M35 High Speed Steel Bits for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics, with Metal Index Storage Box

[Various Sizes] 115 sets of drill bits include 29pcs Fractional Size:1/16” to 1/2” in 1/64th increments.
[M35 Cobalt Drill Bit] The M35 cobalt drill bit is a durable, sharp and robust drill bit suitable for cutting stainless steel, iron castings, copper, aluminum and other soft metals as well as plastics, wood etc..
[Quick and Efficient] The cobalt drill bit set can be used effectively on most soft and hard objects, with a 135 degree point tip and twist design for faster cutting, self-centering to prevent walk-off and faster chip and particle removal..
[HSS Drill Bit Set] HSS cobalt drill bit set for hardened steel with excellent cutting performance. 115 sets of drill bits for long term use. The inserts are hardened and polished for improved sharpness and precise cutting without wobbling..
[Easy Storage] The drill set includes drill holders with size indexes and is packaged in a small, strong package for easy storage and sorting. If you have any questions, please feel free to contact us and we will be happy to help you....

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Hymnorq 7/16 Inch Dia. x 5.51 Inch Long M35 Cobalt Steel Twist Jobber Length Drill Bits 2PC Set, 135 Degree Split Point, Extremely Heat Resistant, for Stainless Steel and Cast Iron

COBALT STEEL - Manufactured from M35 cobalt steel, with molybdenum and cobalt added to create a hardened heat-resistant alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, with up to twelve times compared with an average HSS drill bit..
SELF CENTERING - The 135°quick-cut pilot split points are self-centering and can penetrate quickly with less pressure. The bits will not "walk" or "wander". Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks..
2PC 7/16 INCH FRACTIONAL BITS - The set includes 2pcs of M35 cobalt steel twist drill bits. Total length: 5.51".
working length: 4.06". Manufactured to German DIN338 standard. Packed in a plastic bag and a flat paper box..
FOR METALWORKING - Particularly successful in cutting through hard metals(hardness less than HRC38°) such as stainless steel and cast iron, although they can be used for softer materials like copper and aluminium, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate..
DOWNLOADABLE USER GUIDE - We've summed up some tips of drilling metals, including a RPM chart for several common metals, based on our reviews and some articles on the ....

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FEWELL HSS Step Drill Bit Set 3-Piece Set 29 Sizes M35 Cobalt Spiral Groove Titanium Coated Step Drill Bit for Drilling Plate Aluminum Metal Wood HoleSpecification

【M35 Cobalt High Speed Steel】The durable step drill is made of HSS M35 cobalt, and the surface is plated with cobalt，outstanding durability and sharpness. Effectively reduces the friction to ensure cooler running so as to prolongs service life..
【HSS titanium coating】The surface is treated with a titanium alloy, which greatly improves the cutting performance of the drill bit, is more wear-resistant, and extends the service life..
【Efficient Design】118°X split point tip and two-flute design increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape easily..
【Total 29 Step Sizes】3 drill bits, 29 sizes, our drill bit set includes 3 standard step drill bits, capable of drilling 29 holes of different diameters, thus saving your time and effort..
【Application】The drill step bit suitable for pistol drill or bench drill, cooling water to extend its service life. The appropriate drilling speed is 250-400 rpm. Compared with traditional drills, the impact is minimal and it is almost impossible to break..

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MACXCOIP Cobalt Drill Bit Set, 29Pcs M35 High Speed Steel Bits for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics, with Metal Index Storage Box, 1/16"-1/2"

[Various Sizes] 29 sets of drill bits include 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64“, 3/8", 25/64", 13/32", 27/64", 7/16, 29/64, 15/32", 31/64", 1/2", can meet more needs..
[M35 Cobalt Drill Bit] The M35 cobalt drill bit is a durable, sharp and robust drill bit suitable for cutting stainless steel, iron castings, copper, aluminum and other soft metals as well as plastics, wood etc..
[Quick and Efficient] The cobalt drill bit set can be used effectively on most soft and hard objects, with a 135 degree point tip and twist design for faster cutting, self-centering to prevent walk-off and faster chip and particle removal..
[HSS Drill Bit Set] HSS cobalt drill bit set for hardened steel with excellent cutting performance. 29 sets of drill bits for long term use. The inserts are hardened and polished for improved sharpness and precise cutting without wobbling..
[Easy Storage] The drill set includes drill holders with size indexes and is packaged in a small, strong package for easy storage and sorting. If you have any questions, please feel free to contact us and we will be happy to help you..

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Hymnorq 15 Piece Metric M35 Cobalt HSS Drill Bit Kit with Straight Shank for Drilling Cast Iron, Brass, Aluminium, Stainless Steel and Other Hard Materials

COBALT STEEL - Manufactured from M35 cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit..
135°SPLIT POINT - the 135°quick-cut split point are self-centering and able to penetrate metals quickly with less pressure, prevent bits from "walking and wanding". Easy cutting without need of center punch..
15PC METRIC SET - The set includes 15pcs of M35 cobalt steel twist drill bits: 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7 mm, 8 mm, 9 mm, 10 mm. Well organized in a plastic indexed storage case for easy transport to your worksite..
FOR METALWORKING - Particularly successful in cutting through hard metals(hardness less than HRC38°) such as stainless steel and cast iron, although they can be used for softer materials like copper and aluminium, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate..

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5mm Drill bit M35 Specialist Metal Drill Bits, Twist Drill Bit Set, HSS-CO Twist Drill Bit Stainless 1.0-5.0mm for Drilling Stainless Steel Cast Iron Sheet Metal Steel Plate Angle Iron(5mm)

[High Hardness]: This 5mm cobalt drill bits sets are made of M35 material and contain 5% cobalt, which effectively improves its hardness and ensures stable performance.
[10 Sizes Available]: There are 10 drill bit sizes for this hss drill bit set, and each pack has 10 identical drill bits, you can choose according to your needs.
[High Grinding Precision]: This 5mm twist drill high speed steel bit has a high surface finish, which is very suitable for drilling stainless steel, cast iron, sheet metal, steel plate, angle iron.
[35-degree Bifurcated Tip]: This 5mm hss high speed m35 cobalt twist drill uses a 135-degree bifurcated tip design, and starts drilling immediately with a small force.
[Wide Application]: This 5mm hss drill bit set is sharp and durable, which can be widely used for drilling stainless steel plates, automobile spring steel and die steel.

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