The Cinema Reel Guard Sprocket is an integrated guard design built to hold up to sprocket chunks and crank arm grinds, while offering chain protection at the same time. Made from fully CNC machined 7075-T6 aluminium with a 7mm thickness at the center ensuring the Reel is incredibly strong. Extensive machining reduces the overall weight and adds plenty of crank arm clearance. The Reel Sprocket can be run on 19mm, 22mm and 24mm crank spindles with the supplied adapters. ###section### Product Specs TYPE: Bolt On MATERIAL: Alloy WEIGHT: 130.4g (4.6oz) Colour: Silver, Black, Sandblast Iceberg Blue, Sandblast Gold; Size: 28t, 25t