Features: Double clip sides are more convenient to use.Each clip side is compatible with most mountain bike SPD pedals system,suitable for your cycling shoes with 2-bolt cleat system. 1 pair of provided cleats replacement for most mountain bike SPD pedals system. Made of strong material,wear-resistant and lightweight to use. Wide platform and hollow design reduces the chance of slipping off and improve pedaling efficiency. Anti-slip stainless steel nails provide excellent grip and control. 3 sealed bearings ensure the stability and reliability of the pedals. Dustproof ring and cap protect the bearings from water and dust. Installation is super easy with marking. L for left pedal,R for right pedal. Specification: Material: Aluminum alloy + Stainless steel + Chrome Molybdenum Steel Spindle: 9/16 inch Size: 106 * 92 mm / 4.2 * 3.6 in Weight: approx. 384 g / 13.5 oz (for a pair) Package size: 135 * 120 * 85 mm / 5.3 * 4.7 * 3.3 in Package weight: approx. 629.5 g / 22.2 oz Package List: 1* Pair of Pedal 1* Pair of Cleat (replacement for most mountain SPD pedals system) 4* Screw 4* Washer 2* Wrench