The new generation of PLAY club knobs is made of a special thermoplastic rubber which is colorful, extremely durable and provide great grip on balance tricks. They fit on most of the clubs on the market allowing to customize them and improve the protection of the screws. The square profile, inspired by the classic "RENEGADE JUGGLING" flat knobs, is ideal for balances, locks, legos and it's a sure catch on quick slides over the handle. Wide color selection, 14 options: classic, pastel and UV reactive. Screw and washer for installation on PX3 and PX4 clubs included.