Aluminum Cam & Groove Adapter, Inch Dust Plug

Cam and groove fittings built to standard A-A-59326 or DIN 2828 will mate up with this plug no problem. That covers the vast majority of cam lock couplers you'll run into from other manufacturers, so mixing brands is generally not an issue for the common sizes. Just keep in mind there's no recognized interchangeability standard for the half-inch and eight-inch sizes, so those tend to be hit or miss across brands.

This is a 3-inch dust plug designed to fit 3-inch cam and groove couplers.