ridgid 24 volt tools are no longer being produced by ridgid, so your expensive tools are going to be worthless, as home depot quit buying them from ridgid, so ridgid quit producing them for this reason, you can not even buy this saw from ridgid to expand your set if you do not already have one, try and buy a 24 volt ridgid circular saw or even the max select 18/24 circular saw, so i guess your set, like mine will never be expandable, your stuck with what you have unless you buy a used one or new discontinued one from ebay or a site like that... read full review »