Fed up of smashing your chain on rails & ledges? Then get yourself a guard sprocket! The BSD Guard Sprocket is built tough from 7075 alloy with a classic, no frills 5-spoke design. An offset design provides better chain alignment with a 24mm center hole supllied with both 19mm & 22mm top hat washers to fit all cranks. section Product Specs TYPE: Bolt On
Material: Alloy WEIGHT: 165g (5.82oz)