Part Numbers: N078434 spring has good elasticity and durability. This is part of an impact driver bit holder system that helps hold the screw bit in place after inserting it into the bit holder. Compatible with many machines: DC825B 3, DC825B 4, DC825K 3,DC825KA 3, DC825KA 4, DC827KL 3,DC835KA 3, DC845KA 3, DC845KA-AR 3, DCF805C2-AR 1, DCF805C2-B2 1, DCF805C2-B3 1, DCF805C2-BR 1, DCF815S2 3, DCF815S2 4, DCF885B 1, DCF885B 2, DCF885B 4, DCF885B 5, DCF885B-B3 1, DCF885B-B3 5 Compatible with many machines: DCF885C2 1, DCF885C2 2, DCF885L1 5, DCF885L2 1, DCF885M2 2, DCF886B 1, DCF886B 2, DCF886B 3, DCF886B 4, DCF886B 5, DCF886B 6, DCF886B-B3 1, DCF886D2 1, DCF886D2 6, DCF886D2-B3 1, DCF886M2 1, DCF886M2 4, DCF886M2 6, DCF886M2-B2 1, DCF886M2-BR 1 etc. DCF890 Material: Metal colour: as shown Package Contents: 4 x Impact Driver Spring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.