Unique Bargains M35 High Speed Steel Cobalt Straight Jobber Drill Bits 12 Pcs

The M35 drill bit is made of cobalt high-speed steel, containing 5% cobalt, with high hardness, fast cutting speed, improved wear resistance, and is more durable than an ordinary high-speed steel drill bit. The cobalt drill bit can be used to harden materials. Such as hard metal, stainless steel, copper, aluminum, cast iron, plastic, and wood, can also be used for softer materials. Not suitable for glass or ceramic materials. 135° Quick-cut split point, round straight shank, prevents walking, makes drilling accurate and faster. Fully ground spiral groove design, quickly removes debris, reduces friction and heat, ensures smooth chip movement. These series are small drill bits. Please note the size before you buy. Suggest speed 100-80rpm.