4T6229 Cutting Edge End Bit Fits CAT Fits Caterpillar D3 D3BOne New Aftermarket Replacement Cutting Edge End Bit Fits Caterpillar (Fits CAT) D3 D3B Dozer This aftermarket replacement cutting edge end bit bolts directly to the blade of the Fits Caterpillar (Fits CAT) D3 and D3B track type dozer. The end bit mounts to each outer end of the dozer blade cutting edge, protecting the corners from wear and extending the working life of the blade assembly. Features a 3 hole, reversible design that allows the part to