The BSD Jonesin' Sprocket V2 keeps everything that worked from the version 1 updating the only bits that Sam Jones felt needed changing. Made from super tough 7075 aluminium for durability and stability with a massive high-density, low-friction nylon guard on there for good measure adding plenty of added protection to the sprocket and your chain. That guard is kept in place with four hardened CrMo bolts. Whether you're running 19mm, 22mm or 24mm spindles on your cranks the Jonesin' V2 can run with them thanks to the supplied adapters. ###section### Product Specs TYPE: Bolt Drive MATERIAL: Aluminum WEIGHT: 190.5g (6.72oz) Colour: Champagne, Black