Ateco Medium Coupler, Plastic, 3 Pc. - Fits Med. & Std. Size
A coupler allows you to quickly change the decorating tip on your piping bag without having to empty the piping bag. This plastic coupler may be used with either medium or large decorating tips and fits 14" or larger piping bags.Set of 3: coupler base, medium coupler ring, and large coupler ring