and High Quality. Large hole style, no distribution screws and tools, the installation aperture is 9mm. According to the bicycle industry standard, the bicycle rear axle thread specification is m10*1 (actual measurement diameter is about 9mm). As long as the bicycle rear wheel is not quick-release and is screw-fixed, it can be installed following the bicycle industry standard. However, due to variations in manufacturing standards, compatibility is not guaranteed for all bicycles (please confirm based on actual measurements). The rear axle protrusion length of 6mm or more allows direct installation. If the length is insufficient, remove the nut and directly screw the pedal into the replacement nut. Color: Multicolor Material: Aluminum Alloy Package Contents: 2 x Aluminum Alloy Foot Stunt Peg Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement may vary by +/- 1-3cm.