The Ko-kenImpact Wheel Nut Sockets feature a detachable plastic protector that can be fitted to the socket to prevent damage to the wheel when working in tight spaces. Each socket has its size and a Ko-ken mark clearly printed on the shaft, making it easy to see if the socket is still rotating or stopped. The sockets have a thin-walled shape and 110mm length for accessing nuts recessed deep in the wheel, and a rubber stop is located at the base of each socket to protect the lug nut from damage. The sockets are color-coded by size: blue for 17mm, red for 19mm, yellow for 21mm, and white for 22mm.