Today I added a Lightning Lock 2.5" tool port to a 4" Lightning Lock fitting to my shop vac. Now I can switch between my 4" cnc and my 4" table saw connectors even faster. Save 10% on Carbon Method by using my link below and affiliate code "makingathome" https://carbonmethod.com/?ref=makingathome #carbonmethodco #dustcollection #fittings #saw #woodworking