Caterpillar-style premium aftermarket tooth retainer or locking component. Part reference 286-2110. Size/application: K110 Hammerless Retainer. Matching tooth-system size: K Series K110. One-piece hammerless retainer; no separate conventional pin is required. Secures the replaceable tooth, protector or ripper component to its matching adapter. Brand compatibility: Caterpillar and premium aftermarket systems built to the matching Caterpillar specification. This hardware fits only the specified system and matching dimensions.