The Tractor XL2 is CNC machined from solid 6061 Aluminium, with a very unique and extremely strong tapered design, starting with 12mm at the core, down to 6mm at the teeth, which was created for a clean look, to eliminate the need for crank spacers and also have a recess for your crank arm. This sprocket very eye catching and will definitely set your ride apart from the crowd. Adaptors for 19, 22 and 24 mm spindles included. ###section### Product Specs TYPE: Bolt On MATERIAL: Aluminium WEIGHT: TBC