Professional tool for commercial or occasional use 9mm metric shallow impact socket Stubby impact sockets for access into restricted areas 3/8" drive so will fit any 3/8" drive ratchets / extensions / power bars 6-sided single hex socket Manufactured from chrome molybdenum steel for strength and durability Metric socket Total depth of the socket: 25mm Hex shank on the socket for alternative use with a 17mm spanner