PC600D Keyless Chuck 3/8" for Porter Cable, Replacement DWD112 N774439 D21008 Seamless Repairs, Peak Performance - Choose Our Parts Today Upgrade Your Outdoor Tools with Our Replacement Parts Effortless Repairs, Superior Performance - Trust Our Replacement Parts for Lawnmowers, Brushcutters, and Chainsaws We kindly ask you to double-check the part's appearance in the photo and cross-reference it with the provided dimensions to ensure a perfect fit