Interlock Bushings Skate Display Box (24 pcs.) boost your performance. Unique to Chaya. the Jelly Interlock cushion aka bushings is a special super high rebound polyurethane (PU-) formula. The Interlock construction connects the coned and barreled cushions save more energy than non-interlock cushions and give you a boost when you need it most. Interlock Bushings Skate Display Box cushions absorb all kinds of vibration caused by imperfect surfaces as well as impacts from landing jumps. No matter if you need more stability and control or increased agility. the selection of hardnesses of the Interlock Bushings will do their job. The 15mm barreled setup fits perfectly with Chaya Shari and Zena plates. The Interlock Bushings Skate Display Box cushion is made in three different hardnesses yellow (85/90A). orange (95/85A)and red (90/95A). Interlock Bushings Skate Display Box has many options to customized your set up. to your style and preferences.