Whether on the rails or tricks off the sidewalk

This brake support fits: Fusion X3

1oz Thinsulate on palm side

Shield-free design

Proto-Full-Knuckle SCS V2 Oversized 4" (Gold) Fasen Whether on the rails orThe PROTO Full Knuckle SCS is the original and first Standard Compression System. It fundamentally changed the way a freestyle scooter was built and effectively revolutionized the freestyle scooter after market parts industry. The Full Knuckle SCS is still the strongest and most universally compatible SCS ever created. The Full Knuckle SCS is built to perform and last and carries a lifetime warranty on cracking. Made of High Grade 6061 T6 Aluminum.