part numbers: N078434 Part of the bit holder system Holds the screw bit in place once it is inserted Fits Dewalt and Porter Cable Impact Driver models: DC825B Type 3, DC825B Type 4, DC825K Type 3, DC825KA Type 3, DC825KA Type 4, DC827KL Type 3, DC835KA Type 3, DC845KA Type 3, DC845KA-AR Type 3, DCF805C2-AR Type 1, DCF805C2-B2 Type 1, DCF805C2-B3 Type 1, DCF805C2-BR Type 1, DCF815S2 Type 3, DCF815S2 Type 4, DCF885B Type 1, DCF885B Type 2, DCF885B Type 4, DCF885B Type 5, DCF885B-B3 Type 1, DCF885B-B3 Type 2, DCF885C2 Type 1, DCF885C2 Type 2, DCF885L1 Type 5, DCF885L2 Type 1, DCF885M2 Type 2, DCF886B Type 1, DCF886B Type 2, DCF886B Type 3, DCF886B Type 4, DCF886B Type 5, DCF886B Type 6, DCF886B-B3 Type 1, DCF886D2 Type 1, DCF886D2 Type 6, DCF886D2-B3 Type 1, DCF886M2 Type 1, DCF886M2 Type 4, DCF886M2 Type 6, DCF886M2-B2 Type 1, DCF886M2-BR Type 1, PCC641LB Type 1, PCE201 Type 1