MATERIAL - resin and alloy Construction: For bike pedals with clips and straps, we use durable engineering resin and alloy which are considered for prblems.1 extra pedal strap as a gift.. PEDAL SPECIFICATIONS - Our pedals are 9/16 inch spindle. It is suitable for all 9/16 spindle bikes, including indoor exercise bikes and spinning bikes, as well as outdoor bikes. Pedal size: 9.5 cm long, 6.4 cm wide, clip size: 13 cm long.. SAFE USE - Aluminum Alloy Body and Sturdy Resin Cage.If you choose to put your foot in the non-cage side of the pedal, you run the risk of the cage hitting the ground, So you must be familiar with the pedals before use to ensure .. EXCELLENT CONTROL - Good metal grips on the bottom and nylon type straps on the top will keep your feet positioned just right on the pedals. With bike pedals, you can have an excellent control while pedaling your bike. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.