Features: Fitment Fits for Dewalt Black & Decker 18V 20V MAX XR DCF899HB Type 1, DCF899HB Type 3, DCF899HP2 Type 1, DCF899HP2 Type 3. Model Suitable for DCF899B Type 1, DCF899B Type 3, DCF899M1 Type 1, DCF899M1 Type 3, DCF899P1 Type 1, DCF899P1 Type 3, DCF899P2 Type 1, DCF899P2 Type 3. (Attention: will NOT fit for DCF899 type4) Function Solve the problem that the sleeve always falls off the impact gun during work. Reduce the continuous frustration of the sleeve falling off. Make your work smoother and easier, and reduce expensive maintenance costs. Superior Material .