• 4-Tooth socket, specially designed to remove castellated locknuts found on motorcycle swingarms.• Also suitable for some engine mounting nuts.4-Tooth socket, specially designed to remove castellated locknuts found on motorcycle swingarms. Also suitable for some engine mounting nuts.• 4-Tooth socket, specially designed to remove castellated locknuts found on motorcycle swingarms. • Also suitable for some engine mounting nuts. • Model No. SMC18Technical Specification:Nett Weight: 0.280kgExternal ø: 48.5mmInternal ø: 41mmInternal Socket Depth: 48.5mmNumber of Pins: 4Pin Width: 5.5mmPin Depth: 4mmDrive Type: 1/2"SqDimensions: Length: 60mm x Height: 75mmWeight: 0.308KgWarranty: 1 year