COBALT DRILL BITS - Manufactured from M35 grade cobalt steel, measuring Rockwell hardness up to 67, increases wear-resistance and durability, fast and sharp cutting than other bits like 4241 HSS bit, titanium drill bits. With up to 12 times when compared with an average HSS drill bit.
FOR HARDENED MATERIAL - M35 Cobalt HSS BIT is more suitable for hardened material. Particularly successful in cutting through hard metals such as stainless steel and cast iron, they also can be used for softer materials like Wood, Aluminum Alloy.
SELF CENTERING: Increases cutting speed with self-centering and prevents walking, clears chips and particles faster. The 135¡Æquick-cut pilot split points are self-centering and can penetrate quickly with less pressure.
PRECISION GROUND - These bits are fully ground so that it's cutting diameter is seriously accurate and the lifespan is prolonged in comparison to non-ground alternatives(roll forged bits). Smooth bit surface allows for nice clean holes.
PACKAGE INCLUDING - 10 x 5mm diameter cobalt twist drill bits in a plastic box for easy storage and organizing. Total lenght: 3.4 inch; working length: 2 inch.
