Features1Compatibility: Clipless pedals set are compatible for SPD system and for Wellgo cycling shoe, a pair of professional pedals, suitable for professional riders and beginners. 2Easy to Install: The pedals are divided into left and right pedals by the L or R symbols. They can be fitted using the supplied hexagonal spanner by turning the left pedal anti clockwise and then the right one clockwise. 3Rugged Material: The main body of the pedal is made of aluminium alloy, the standard 9/16in rugged chromoly steel axle bearings are suitable for most models, self lubricating bearings, maintenance free. 4Adjustable Tension: The self locking pedal helps riders pedal forward with less effort, especially on uphill climbs; adjust the pedal tension to suit your needs and train locking and unlocking before you start riding on the road. 5Securely Fixed: Road cycling pedals can help the rider to fix the position of the heel pedals, avoiding the risk of the rider's body centre of gravity shifting due to the high frequency of foot disengagementSpecificationItem Type:CliplessPedalsMaterial: Aluminum alloy body + chrome molybdenum steel axleLock Plate: Self matching lock plateBearing: DU + Bearing PedalPackage List2 x Pedals16 x Accessories1 x User Manual