I just had to come over here and tell you how much I love these tips (maybe even, with continued use). They fit perfectly with my shop vac hose and the extensions that come with my shop vac except for the larger of the two slotted tools. The large crevice tool fits but is loose and the adapter that came with it doesn't work with my Shop-Vac, but once the vacuum is turned on the vacuum's suction power keeps the tool in place. I would recommend them.