This Dekton 40 Piece 1/4" & 3/8" Drive Socket Set is ideal for DIY hobbyists and professionals. It includes a 140mm spinner handle, a 170mm ratchet handle, a 3" extension bar with a 1/4" to 3/8" drive adaptor, and a 3/8" disc. The set contains both metric and imperial sockets, a spark plug socket, and spline sockets. These sockets feature extra strong rounded walls designed to grip bolts evenly and reduce damage.