Zenith Industries ZN104141 SDS Plus Flat Chisel Bit, 1-1/2 x 10" Made from durable forged and heat treated chrome vanadium steel 58 Rc cutting edge that can be re-sharpened Compatible with all SDS Chucks Excellent for concrete and masonry breaking, chipping and scaling applications Wear ANSI / OSHA approved eye protection. Flow power tool manufacturer's operation and safety advise