BSD Guard SprocketWhen you need to protect your chain from grinding or when jumps go wrong, the BSD Guard sprocket will do that and look good at the same time. With a classic five spoke design, youll be feeling the vibes with this epic BMX guard sprocket from BSD. Super tough 7075 T6 construction Offset design for better chain alignment Centre hole 24mm, supplied with both 19mm and 22mm top hat washers to fit all cranks