The Wethepeople 4Star Sprocket has been the go-to choice for many of Wethepeople's pro squad for a while now which speaks volumes to how tough this thing is. It's built from a solid 6mm thick, 6061-T6 alloy with a durable 4-spoke design that really creates that rigid strength. The 4star Sprocket can be run on 19mm, 22mm and 24mm cranks with the adapters included. ###section### Product Specs TYPE: Bolt On MATERIAL: Alloy WEIGHT: 73.7g (2.6oz) Colour: Black, Polished; Size: 25t, 28t