Blackspire crusher beavertail bash guardthe crusher beavertail bash guard protects your chain ring from damage by rocks and rough terrain intended for all mountain riding or xc racing the crusher is constructed from lightweight moulded thermoplastic and cnc machined 6061 t6 aluminium features protects chain teeth from damage by rough terrain suitable for all mountain and xc racing constructed from cnc machined 6061 t6 aluminium and lightweight moulded thermoplastic fits 26 32t or 32 38t