Got a collection of power tool batteries and wish they were all compatible? This clever adapter lets you use your powerful Dewalt 20V Max or Milwaukee M18 batteries to run your smaller Bosch 12V and 10.8V tools! It's a serious money-saver – no need to buy separate Bosch batteries. The adapter is made from high-quality, heat-resistant ABS plastic and is precisely engineered for a secure, snug fit. It works with a ton of Dewalt 20V battery models (like DCB200, DCB201, DCB203, etc.) and Milwaukee M18 batteries (like 48-11-1850, 48-11-1860, etc.). On the other end, it connects to Bosch GBA 10.8V/12V tools, replacing batteries like BAT411, BAT412, and others. Important note: This is ONLY an adapter. It does NOT charge batteries. Also, make sure your Dewalt/Milwaukee battery is charged. Comes with a 6-month warranty and friendly support. Unlock the full potential of your tool collection!