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 cycling 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 alloyAxle: 9/16 inchSize: 8.7* 8 * 2cm / 3.4 * 3.1 * 0.7inUnit weight: 151g / 5.3ozPackage weight: 433g / 15.2ozPackage list1 * Pair of QR Pedals