Best Double Flutes Drill Bit

Yougfin Step Drill Bits with Automotive Center Punch,Unibit Titanium Coated High Speed Steel Step Bit Set for Hole Drilling,50 Sizes with Aluminum Case for DIY Lovers,5+1pcs

...】：These step drill bits have a small point angle of 118° and require less pressure when centering in the material. The point starts drilling at contact, reducing friction, pressure, and heat. The larger the point angle, the higher the contact pressure and the centering in the material requires more pressure.
【Double Flutes & Tri-Flatted】：These drill bits feature a special dual flute straight design for dependable performance and durability. And the shanks on these step drill bits have three flats that help prevent the bits from slipping in the drill chuck during drilling.
【Product Feature】: Step drills are indicated in sizes. These sizes determine the diameters and the number of steps. Assortment comes with 5 drill bits of a combined 50-step sizes added：6-step drill（3/16" to 1/2"），9-step drill（1/4" to 3/4"），10-step drill（1/4" to 1-3/8"），12-step drill（3/16" to 7/8"），13-step drill（1/8" to 1/2"）.

Strength & Hardness - Tapered web enhances strength and durability. Titanium coating adds lubricity and protection from abrasion. Jefe Hex drill bit with enhanced parabolic flutes promotes chip removal which decreases friction and heat..
Hex Shank - Quick change hex shank fits easily into all power tools and Impact drivers. Solid bonding technology manufacturing eliminates radial runout and improves concentrically. High torque, impact-rated accuracy..
Easy Cut Point - The 135° easy cut split point ensures a precision start, eliminates walking on the working surface which provides clean and accurate holes. No need for a center punch. More effective for drilling on curved surfaces..
Professional & Multiple Use - Jefe Hex drill bits are built for general purpose applications, such as DIY projects, home maintenance and MRO (Maintenance, Repair and Operations). Ideal for steel/copper/aluminum/zinc alloy/wood/ plastics..
Package & Size - 1 Piece drill bit in a double blister pack with easy opening design. Diameter 5/16 inch, total length 4.37 inch, 135° split point, hex shank drill bit..

Each WeldTec auger bit features a hard cutting edge welded to the base material.
Auger drill bit features a long-lasting nail-cutting life.
Wide flutes and a 7/16-inch quick-change impact shank make this a versatile auger drill bit.

Each Weld Tec auger bit features a hard cutting edge welded to the base material.
Auger drill bit features a long-lasting nail-cutting life.
Wide flutes and a 7/16-inch quick-change impact shank make this a versatile auger drill bit.

Each WeldTec auger bit features a hard cutting edge welded to the base material.
Auger drill bit features a long-lasting nail-cutting life.
Wide flutes and a 7/16-inch quick-change impact shank make this a versatile auger drill bit.

Each WeldTec auger bit features a hard cutting edge welded to the base material.
Auger drill bit features a long-lasting nail-cutting life.
Wide flutes and a 3/8-inch quick-change impact shank make this a versatile auger drill bit.

High Quality Material Selection, Stable Performance, High-Quality High-Speed Steel Milling And Forming, The Overall Vacuum Heat Treatment, Special Grinding Edge On The Head, Good Positioning, Sharp And Durable Drill Bit..
With High Coaxiality And Overall Grinding, The Grinding Drill Bit Is Better Than The Rolling Drill In Both Accuracy And Life, Especially The Toughness Is Increased Several Times, And It Is Not Easy To Break During High Strength Machining..
Flutes Form - 2 Flutes Form Helps Clear Chips And Debris Away From The Bit, Decreasing Friction And Heat For A Faster, Cooler Drilling Process, Chatter-Free Design With Staggered Cutting Teeth Ensure The Precise Countersinking And Hole Smooth Clean..
Straight Shank And 135° Point Angle - Straight Shank For Standard Drill Chucks And Collet Chuck To Hold Firmly, Assuring Accurate Centering.
Helical Flute For Swarf To Easily Get Out.
Ideal For General Purpose Drilling Applications..
Carburizing And Quenching Process Is Adopted With High Surface Hardness, Strong Fatigue Resistance, Higher Efficiency And Long Service Life.Especially Suitable For Aluminium Alloy, Iron, Plastic, Iron, Wood, 201 Stainless Steel..

... FINISH MECHANIST DRILL BIT SET: Premium M2 high speed steel construction with black and gold finish offers the drill bit wear resistance and durability. Black and golden surface finish resists corrosion and lubricates the drill bits better for cutting metal, wood, and plastic..
135 DEGREES SPLIT POINT and PRECISION FLUTES: 135 degrees split point and twist design prevent "Walking", reduce logging, and penetrate hard material without a pilot hole. Precision fully ground cutting edges and flutes increase cutting speed and clear chips quickly to extend drill bit working life..
SET SIZES 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" and 1/2". (1/16" to 1/2" in 1/64" increments)..
WIDE APPLICATIONS: 3-flat shanks fit standard three-jaw drill drivers and ensure bit not spin in the drill drivers to improve working efficiency. J&Q 29 pcs mechanic set can be used in drilling metal, wood and plastic for home improvement, DIY and engineering. This set is suitable for electricians, fitters, maintenance workers and plumbers..
PACKAGING: All set sizes are kept in a strong and professional plastic case....

【Combo Set of 16 Pcs】Total 16 Pcs hex shank twist drill bit set including sizes:13 most commonly-used sizes (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") to satisfy all needs, additional piece of 1/16", 5/64" and 3/32" for easy replacement..
【Premium HSS Titanium Coating】Industry grade 4341 high speed steel drill bit set, harder than 4241 HSS used in other similar drill bits set. Titanium coating increases wear-resistance and durability..
【Flutes Form & 135°Split Point】2 flutes form helps clear chips and debris away from the bit, decreasing friction and heat for a faster, cooler drilling process. 135° Split Point with straight shank prevents walking and makes drilling precise. No center punch is needed..
【Quick Change】1/4 inch(6.4mm) hex shank fits into all power tools more easily and securely, specially for locking into quick change chuck..
【Meet Your Demands】Small Drill bits for soft metal, wood, plastic, steel within 5mm thickness, aluminum alloy and other soft metals. Ideal for DIY projects, household maintenance and repair.×NOT for glass, ceramic or concrete drilling..