Ram 96045 Black Drill Bit Set - High Speed Steel Twist Bits for Wood, Metal & Plastic - Perfect for DIY Projects, Home Repairs & Professional Use

This HSS drill bit is made of highly alloy steel. Its generally high hardness (> 60 HRC), is guaranteed up to a temperature of 600 C. Its wear resistance is wear and tear and its high tenacity at high temperature give it a good cutting quality. Sharpening can be done by hand.