Bit extensions attach to drill and screwdriver bits. They extend the bits reach to allow for deeper holes to be drilled and fastening in deep holes. Adapters allow for fastening tools to be able to adapt their tool from one drive size to another.

Impact sockets were designed to prevent shattering due to overtorque. Impact sockets are made with chrome molybdenum steel, which will cause the socket to bend rather than shatter. If using an impact wrench, it's best to use impact sockets and not conventional chrome sockets.