Komatsu-style premium aftermarket tooth or wear-system pin. Part reference K400S. Size/application: Pin. Matching tooth-system size: tooth size 400. Matching retainer reference depends on the installed system generation and is not separately identified in this catalog. Secures the replaceable tooth, protector or ripper component to its matching adapter. Brand compatibility: Komatsu and premium aftermarket systems built to the matching Komatsu specification. This hardware fits only the specified system and matching dimensions.