The Wellgo B299 Cromoly Axle 2DU Flat MTB Pedals features the 2DU pedal bearings, a patented design system from Wellgo. The bearings are made from the highest quality metals for the smoothest feeling ride. With incredibly high durability the B299 2DU bearings have a far longer life span than standard ball bearings. Wellgo B299 Cromoly Axle 2DU Flat MTB Pedals Features Weight: 380g per pair Body: 6061 CNC Aluminium Colour: Black Spindle: Cr-Mo Size: 109 x 105 x 23.8mm 2DU bearings.