This part is a non-original compatible spare, the manufacturer's name and part number are for reference only. Please note Promise warranty service, 1 year warranty, 1 month money back guarantee, your satisfaction is always our highest pursuit! Please contact us with any questions or concerns! If this product is not suitable for your model after receiving the goods or during the installation process, please be sure to contact us in time, and we will help you choose the accessories suitable for your model. If there is an error in the process of installing and replacing this product, which causes our product to be damaged or unusable, please contact us in time, we can help you reduce the loss. Too many part numbers to list all. If you can't find the part you need, please contact us and we will try our best to help you find the right part. We accept bulk product orders FITS THESE MODELS for Milwaukee 2601-20 (SER B28A) 1/2" Compact Driver Drill 2601-22 (SER B28A) 1/2" Compact Driver Drill 2601-20 (B28B) 1/2" Compact Driver Drill 2601-20 (B28C) 1/2" Compact Driver Drill 2601-20 (SER B28D) 1/2" Compact Driver Drill 2601-059 (SER D36A) 1/2" Compact Driver Drill 2601-059 (SER D36C) 1/2" Compact Driver Drill 2601-21 1/2" Compact Driver Drill