The Primo Griffin Guard Sprocket takes the simplicity of a solid sprocket style and adds a bash guard keeping your chain protected from grinds. It's made from CNC machined 6061-T6 aluminium for the perfect balance between strength, durability and weight. The Griffin Sprocket comes with 19mm and 22m adapters with an engraved Griffin design to finish. ###section### Product Specs TYPE: Bolt On MATERIAL: Aluminium WEIGHT: 190g (6.72oz)