【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】5.59 inch overall length, 1-1/4*1-1/4 inch square bushing head 【Durable One Piece Shank】Chrome steel durable one piece sds plus shank bushing chisel 【16Tips Bushing Head】16 pcs cone shape teeth, to ceate CSP 4-5 roughness bushing hammer