Sockets are tools used to tighten and loosen nuts and bolts. They come in 6 or 12 point styles and shallow or deep sizes. Sockets and ratchet wrenches are made of non-conductive materials to prevent sparking. Ratchet wrenches allow one-way rotation for faster tightening or loosening than standard wrenches. Breaker bars are also non-conductive and are longer tools used to free stuck bolts and nuts, generating more torque than ratchet wrenches for rusted or high torque fasteners.