I used these to add 20 ft. extension hoses to my ShopVac, Craftsman and Ridgid shop vacs. Required no tape or other modification as some buyers have suggested. They are a friction fit and do not support use with the Ridgid locking hose catches but otherwise work with Ridgid fittings. Would buy again.

A

Although I had read that the inside diameter (ID) of these was a bit over 2.25 inches (the standard OD of a shop vac hose) I went ahead and ordered them figuring I could make do and the price for four of them was the same as the price of one. That reviewer was right. The ID of these are just a fraction larger than 2.25 inches (like maybe 2.265 inches?) hence they fit loosely on my existing hoses and a light pull on the hose disconnects the coupler. I put a piece of painter's tape on the inside which adjusted for the size differential and they are working fine for me now. However if you want something that you don't have to fuss with, bypass these couplers otherwise they are working great for me.

Great solution for big issue great quality great price.