Best Cobalt Extension Drill Bit

BeHappy 29Pcs Cobalt Drill Bit Set, M35 High Speed Steel Drill Bit Sets, Twist Jobber Drill Bit Sets for Hardened Metal, Stainless Steel, Cast Iron with Indexed Round Case, 1/16"-1/2, Black and Gold

..., 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". This 29 PCS M35 Cobalt Drill Bit Sets meets all your needs.
【Cobalt 5% HSS】: High-Speed Steel M35(Cobalt 5%)cobalt drill bit set can effectively drill tough and high tensile materials. The metal drill bit is especially suitable for cutting hard metals, such as stainless steel, cast iron, superalloys, titanium alloys, rigid plastics, and wood, It can also be used in soft materials.
【Characteristics】: The twist drill bit is 135°split point with a round straight shank, self-centering prevents walking, and makes drilling precise and faster. Double back Angle process and full grinding process is adopted fully ground process twist design helps clear particles faster, decreases friction and heat for a cooler drilling performance.
【Packaging】: The jobber drill bit set includes a portable bucket that can be hung anywhere....

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1/8 Inch Cobalt Drill Bits(10Pcs), HPHOPE M35 HSS Metal Twist Drill Bits Set, Jobber Drill Bits Length and Straight Shank, Suitable for Drilling in Hard Metal, Stainless Steel, Cast Iron

【M35 COBALT HIGH SPEED STEEL】1/8" drill bits for metal made from M35 Cobalt High Speed Steel and contain 5% Cobalt, which increases wear-resistance, durability and extra longer life span, so that the drill bits last through multiple uses.
【135° SPLIT POINT】135°quick-cut pilot split points are self-centering and can penetrate quickly with less pressure. Straight shank of this cobalt steel drill bit allows for firmly holding and accurate centering and makes drilling precise and faster.
【FULLY GROUND PROCESS】Fully ground spiral groove design clears particles quickly, decreases friction and heat for faster drilling performance.
【PROFESSIONAL & WIDELY USE】Jobber drill bits perfectly Suitable for drilling holes as Stainless Steel, Copper, Cast Iron, Galvanized Pipe, Aluminum Alloy, Wood and Other Softer Metals. Not for Glass or Ceramic Materials.
【EASY USE & STORAGE】This metal twist drill bits set includes 10pcs 1/8" Cobalt Drill Bits, This drill bit fits the majority of power drill currently on the market and come with a portable plastic case for easy storage and DIY, household maintenance and repair.

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Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs)

Premium M42 8% Cobalt Steel ,68-70 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life..
3 Steps Desigh for Cutting through Stainless Steel,Hard Metals,Aluminum,Plastic..
This Cobalt Drill Bit is Typically Capable of Running Three to Five Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes..
The Sufficiently Sharp Bit Edge Can Cut the Metal Material into Long Strips of Iron Chips rather than Slowly Grinding Throng the Material with a Blunt Drill Bit..
19Pcs 135 Degree Split Point Drill Bits Includes :1mm(length:3.4cm) 1.5mm 2mm 2.5mm 3mm 3.5mm 4mm 4.5mm 5mm(length:8.5cm) 5.5mm 6mm(length:9cm) 6.5mm 7mm 7.5mm 8mm(length:11.5cm) 8.5mm 9mm 9.5mm 10mm(length:13cm) [DIA 0.5mm Increments] ..

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JEFE HEX 115 PCS HSS Cobalt Drill Bit Set, Twist Jobber Drill Bits Set, 135-Degree Split Point, Fractional 1/16"-1/2", Letter A - Z, Wire #1 - #60 with Metal Indexed Storage Case

DRILL BITS SIZE: Jefe Hex 115 pcs set includes 29 pcs fractional sizes from 1/16" to 1/2" by 64ths increments.
60 pcs wire sizes from #1 to #60. Almost cover all sizes you would use..
COBALT JOBBER DRILL BITS:115 pcs high speed steel with 5% cobalt drill bit set can resist high heat abrasion while drilling. M35 cobalt HSS twist drill bits is more suitable for hardened working material. Particularly adapt to drilling stainless steel, cast iron, high temperature alloy, titanium alloy and even hard plastics, and woods. Can also be used for soft materials..
TWIST DRILL BITS: Premium HSS with 5% Cobalt and 135° split point drill tip design guarantee 115 pcs drill bit keeping sharpness while drilling hard materials and prevent tips walking on the working surface. Proper twist and flute design clears chips and particles fast..
WIDE APPLICATION: Jefe Hex 115 pcs set with sharp and hard cutting edge is ideal for versatile application especially for projects made from hard material, such as kitchen utensils, machine parts, medical equipment, DIY projects and so on..

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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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5mm Cobalt Drill Bit Set, M35 Twist HSS Drill Bits Straight Shank, 5mm High Speed Steel Drill Bits for Drilling in Hard Metal, Stainless Steel, Cast Iron

【10PCS 5mm Cobalt Drill Bits】10pcs -(Dia 5mm) x (Length 86mm) metal drill bits. This drill fits most power drills on the market today and comes with a portable plastic case for easy storage and organization..
【M35 Cobalt High Speed Steel】Made of M35 Cobalt Steel, Cobalt is added to form a hardened alloy, measuring Rockwell hardness up to 67, faster cutting speed, longer service life, up to twelve times more drill bits compared to ordinary high speed steel. HSS bit set, harder than the 4241 HSS used in other similar bit sets. These bits also contain 5% cobalt for improved wear resistance and durability..
【Full Grinding Process and 135° Split Point】Fully ground helical flute design removes particles quickly, reducing friction and heat for faster, cooler drilling performance. The 135° straight shank split point prevents walking, making drilling more precise and faster..
【PROFESSIONAL AND WIDELY USED】M35 Cobalt High Speed Steel is more suitable for hardening materials. Ideal for cutting stainless steel, steel and cast iron as well as wood, aluminum alloys and other metals. Not suitable for glass or ceramic materials. Pay attention to speed, pressure and heat control when drilling..
【Quality Service】If you have any questions about ....

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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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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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Flexible Drill Bit Extension Set with Drill Bit Sets, Flexible Drill Shank, Hex Shank Flexible Drill Bit Connecting, Universal Socket Adapter Set, Drill Bit Extension Set Hand Tools Set (4PCS)

【Complete Collocation】Package included 2pcs flexible drill bit extension, 2pcs 105° right angle drill extension, 3pcs 1/4 3/8 1/2" universal socket adapter set, 10pcs screwdriver bit set..
【105 Degree Right Angle Drill and 1/4 flexible bit extension】It Come with a 105 Degree Right Angle Drill Extension Bit and a 30cm Flexible Drill Bit Extension Bit. Easy, Lightweight, fast, connect to the standard hex screwdriver. These Extension kit work great, when you have limited access..
【Impact Driver Bit Set】1/4 Hex Shank Socket Adapter Impact Set Square Nut Driver Drill Bit 1/4" 3/8" 1/2" ,connect to the standard hex nut drivers, impact hole saws, spade bits and more..
【Drill Bit Screwdriver Extension】These Tools are Work Great for Light Drilling, Slow Speed/Screw Driving, Like Cordless Drill, Ratchet Hand Screwdriver etc, Not Compatible with Drivers Which are High Speed and Heavy Force Drills, though They are Tough for Good Torque Spin..
【Durable Drill Attactment】Lasting Flexible Drill Bit Extension to use,Lightweight, fast, connect to the standard hex nut drivers, impact hole saws, and spade bits, Happy New Year Gift for Dad/Father,Husband, Boyfriend, Men,DIY Handyman..

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