Whether you're one of those riders whose sprockets always takes a lot of abuse or you just prefer the look of a solid sprocket, the SaltPlus Solidus Sprocket is the one for you. Fully CNC machined from 6061-T6 alloy with that 6.35mm thick solid design for maximum strength. It comes with 19mm and 22mm adapters so the sprocket can be run on most cranks. ###section### Product Specs TYPE: Bolt On MATERIAL: Alloy WEIGHT: 68g (2.4oz) Colour: Black; Size: 28T, 25T