Feature: 1. Quick-release pedals compatible with MKS and easy to remove from the crankarm without tool. 2. Aluminum alloy body with cro-moly axle for great durability and long time lasting. 3. Universal 9/16 inch screw thread spindle fit for most folding bike and road bike. 4. Sealed bearing and DU structure for smooth rotating. 5. Side reflective stripe improve safety in dark. 6. Universal 9/16 inch screw thread spindle fit for most folding bike, MTB bike and road bike. Specification: Quick release adapter easy to install or remove the pedals, aluminum alloy frame and cro-moly axle for great durability and long time lasting, this quick release pedal will provide you a pleasant Cycle experience~ Feature: Quick-release pedals compatible with MKS and easy to remove from the crankarm without tool. Aluminum alloy body with cro-moly axle for great durability and long time lasting. Universal 9/16 inch screw thread spindle fit for most folding bike, MTB bike and road bike. Sealed bearing and DU structure for smooth rotating. Side reflective stripe improve safety in dark. Specification: Material: Aluminum alloy Axle: 9/16 inch Size: 8.7* 8 * 2cm / 3.4 * 3.1 * 0.7in Unit weight: 151g / 5.3oz Package weight: 433g / 15.2oz Package list： 1 * Pair of QR Pedals Package List: 1 * Pair of QR Pedals