Features:* Compatible models DCF885B type1, DCF885B type2, DCF885B-B3 type1, DCF885B-B3 type2, DCF885C2 type1, DCF885C2 type2, DCF885L1 Type5, DCF885L2 type1, DCF885M2 type2, DCF886B type1, DCF886B type2, DCF88 6B Type3,DCF886B Type4,DCF886B Type5 , DCF886B type 6DCF886B-B3 type1, DCF886D2 type1, DCF886D2 Type6, DCF886D2-B3 type1, DCF886M2 type1, DCF886M2 Type4, DCF886M2 Type6, DCF886M2-B2 type1, DCF886M2-BR type1, DCF805C2-AR type1, DC F805C2-B2 Type1, DCF805C2- B3 Type1, DCF805C2-BR Type1* Spring and steel ball replacement part numbers: N078434 N089668* This part of the bit holder system.* Holds the screw bit in place after insertion.* Made of metal, it is very flexible and durable. Specifications: Material: metal Color: black Part number N078434 N089668 Quantity: 2 set Weight: about 15g Package includes: 2 * steel ball spring sets Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.