Both the Squiddy-B and Squiddy-U are made from Acetal. Acetal is an engineering thermoplastic used in precision parts requiring high stiffness, low friction, and excellent dimensional stability making it great for a balisong trainer. This trainer is safe, legal everywhere (including airplanes), and perfect for young folks whose parents don't want them shredding their new sofa with a sharp butterfly knife.
The Squiddy-U utilizes the same hardware as our other premium models—phosphorous bronze washers and steel zen pin construction create a smooth flipping action you've come to expect from Squid Industries. Take your flipping skills up a notch with the Squiddy-U butterfly trainer!