Four tooth socket, specially designed to remove castellated lock nuts found on motorcycle swingarms. Also suitable for some engine mounting nuts. * Four tooth socket specially designed to remove castellated lock nuts found on motorcycle swingarms. * Also suitable for some engine mounting nuts. * Model No. SMC19 https://elecena.pl/product/27188579/sealey-smc19-motorcycle-swingarm-lock-nut-socket-4-pin-43mm 2024-11-08 https://elecena.pl/product/27188579/sealey-smc19-motorcycle-swingarm-lock-nut-socket-4-pin-43mm 2025-10-24