"Need some protection for your Milwaukee M12 REDLITHIUM battery terminals in a bag full of junk? Want to keep those batteries accessible on the wall or ziptied to a pipe in your workspace? This cover can take care of both tasks. The battery clips into the cover with its retaining tab so it can be mounted at any angle. This cover is 3D Printed to order in PLA. Compatible with Milwaukee M12 REDLITHIUM Batteries including 48-11-2401, 48-11-2420, 48-11-2402, 48-11-2430, 48-11-2440, 48-11-2460"