Ordered this coupler with the Ateco 808 tip & Nurture's 18" piping bags, and in one fail swoop, completely upped my game in how I pipe my soaps! This thing is awesomely HUGE & incredibly well-made! Exactly as the previous reviewer mentioned, this coupler should last a lifetime, which makes it an outstanding investment, for an equally outstanding price! Fits the large Ateco tip I bought perfectly, and makes it possible to securely & effortlessly attach tip to piping bag (and easily switch out tips, mid-project if you needed to). I was using this cheapie-plastic cupcake decorating kit that I found at Walmart to pipe my soaps, and it wasnt until I bought a tip & coupler from Nurture that I discovered just how archaic that was! The difference in appearance from the soap I piped yesterday to the soap I piped today is night & day! Absolutely WORTH IT to invest in better equipment & tools if, like myself, you're wanting to grow & advance in your love for piping soap... Nurture makes that possible! I'm saving up for the Royalty Soaps Piping Kit sold here (or rather, dropping hints to my husband that it would make a GREAT gift LOL!), but in the meantime, I'm so grateful Nurture offers individual piping tips & tools, so that beginners, like me, can "up their game" little by little, and at such a great value & price!