Sunday updated their popular Knox Sprocket making the V2 model even sleeker and more protective than the original. Built from CNC machined 7075-T6 aluminium with a 6mm thickness the knox is durable and reliable, with the added protection the guard offers it now works with all BMX chains. The Sunday Knox V2 Guard Sprocket is rotatable with 5 sprocket bolt hole positions to really extend the life of the sprocket. Adapters are included allowing the Knox V2 to be run on 19mm, 22mm and 24mm spindles. ###section### Product Specs TYPE: Bolt On MATERIAL: Alloy WEIGHT: 140.6g (4.96oz) Colour: Anodized Fuchsia, Frost Blue, Black; Size: 28T, 25T