The 48 Tools Milwaukee pack out attachment brings our already amazing Milwaukee battery holder to a whole new level by making it completely mobile. Simply attach a 48 Tools Milwaukee M18 battery holder with the provided screws and now you can attach 4 batteries to the lid of any full size Milwaukee pack out box. Buy 2 and you will be able to walk in up to 8 batteries onto sight just by attaching them to 1 full size pack out box. Need both M12 and M18 Milwaukee batteries on site No problems!! Simply insert some of our 48 Tools M12 attachments and you now can bring all the batteries you need to use. The 48 Tools Milwaukee pack out attachment will fit the following Pack out items Dolly, Mounting plate Large tool box Radio charger Low profile organiser All full size organisers All full size tool cases 2 wheel Kart, rolling tool box 48 Tools Milwaukee pack out attachment comes with 1x 48 Tools Milwaukee pack out attachment and 5x mounting screws. 48 Tools m12 and m18 battery holders sold separately