The SaltPlus Trident Sprocket is the perfect upgrade for for those beginner completes, it won't break the bank but gives you the feel for aftermarket parts. Fully CNC machined from 6061-T6 alloy for strength without adding unneseccary amounts of weight, with 19mm and 22mm adapters allowing it to be run on all cranks. ###section### Product Specs TYPE: Bolt On MATERIAL: Alloy WEIGHT: 68g (2.42oz) Colour: Oil Slick, Black; Size: 25t, 28t