Bicycle pedals fit 9 mm(3/8 inch) shafts. Designed for BMX, mountain bikes, and general-purpose bikes, it can be applied to both front and rear wheel axles to provide solid support and stopping.SpecificationColor: SilverMaterial: Aluminum AlloyTotal Size: 100x28 mm/3.9x1.1 inch(LxW)Aperture: 9 mm/3/8 inchPackage List: 2 x Bike PegsAdvantageFoot Bicycle Pegs are durable, safe, and reliable, with a maximum weight capacity of up to 200 lbs, fit front and rear axles, easy to carry others' tools, and provide double foot support.InstructionWhen you install the bike foot pegs on the rear axle of your bike, please make sure the axle length is more than 5mm (0.2 inch), if the axle length is not enough, you need to remove the screws on the axle, and install the foot pegs on the axle to make sure it is safe.