【Concrete Surface Prep & Restoration】Best for small area concrete repair and patch, roughen and pulverize concrete to increase the new coating bonding effectiveness 【Fit With SDS Plus Rotary Hammer】SDS Plus 3/8"(10mm) diameter shank bushing tool, Fit with SDS Plus rotary hammer 【Size】5.35 inch overall length, 1.34 inch Round bushing head 【Durable One Piece Shank】Chrome steel durable one piece sds plus shank bushing chisel 【16Tips Bushing Head】12 pcs cone shape teeth, to ceate CSP 4-5 roughness bushing hammer