Black & Decker™ Screw is designed for drill, industrial cordless drill and DeWalt® VSR hammer drill, cordless drill, right angle cordless drill, cordless hammer drill, electric drill, VSR electric drill, SDS rotary hammer, V drill, B drill and XRP hammer. Screw is made of tough steel for long life and has a beveled head with torx drive for a secure fit. It is reverse threaded for securing drill chucks and has locking compound within the threads for a uniform tighter installation.