4 Piece Spark Plug Socket Set3/8" Sq Drive WallDrive SocketsForged SteelForged, Chrome Vanadium steel, 3/8"Sq drive WallDrive sockets with rubber plug retention, external hex and polished chrome finish. Set includes thin walled 16mm socket, for where clearance is tightFeatures: Forged, Chrome Vanadium steel, 3/8"Sq drive WallDrive sockets, polished chrome finish. Rubber plug retention and external hex. Sockets: 14, 16, 21mm, 16mm Thin-wall. Includes thin walled 16mm socket, for where clearance is tight. Lifetime guarantee . Specification: Drive -3/8"Sq Length -63mm Net Weight -0.63kg Size(s) -14, 16, 21mm, 16mm Thin Wall Further Information We sell a wide variety of tools and workshop equipment for both the DIY and Professional markets. Alias: ys01550 Loops 4 Piece Spark Plug Socket Set - 3/8" Sq Drive WallDrive Sockets - Forged Steel in Metallics