Best Straight Shank Twist Drill

TA-VIGOR 12mm Straight Shank Twist Drill Bit, High Speed Steel HSS-Co 5% M35 Cobalt Round Shank Twist Drill-Perfect for Drilling Metal Materials Steel,Copper,Aluminum Alloy

【Size & Package】Cutting Edge Diameter : 12mm / 0.47″.
Package includes1pc 12mm straight shank twist drill bit..
【High Speed Steel】Made of HSS cobalt material, the drill bit is hard enough, anti-bending and will not fracture easily. The surface coating can better protect the drill bit sets from corrosion and expand their longlife..
【Straight Shank】Round shank is suitable for a wide variety of toolholding systems. Universal flute and overall length allow minimal adjustment during work..
【Double Cutting Edge】 The sharp cutting edge promotes faster as well as preciser drilling. Its spiral flute assure fast heat dissipation, protecting the twist drill bit from high temperature damage and getting rid of glitches or scrap..
【Wide Applications】Our twist drill bits have various sizes and can meet your needs for drilling glass, stainless steel, metal and wood materials, etc.. They can be clamped to manual and electric drilling tools, widely used in household or processing industries..

Manufactured from High Speed Steel Twist Drill Straight Shank Cobalt Twist Drill Hand Drill Hole Drill Set.
No center punch is needed - the 135° Quick-Cut points are self-centering and penetrate quickly with less pressure. Will not "walk" or "wander".
must be used and operated at 1500 RPM or greater for maximum efficiency. Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks.
Material: Drilling Steel, Stainless Steel, Metal and Iron. Particularly successful in cutting through wood, rubber, bamboo and plastic. DO NOT suggest to cut hard metals such as hard metal ,stainless steel and cast iron.
Package: Includes 13pcs of steel twist drill bits: 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm.