High Quality Material - resin and alloy Construction: For bike pedals with clips and straps, we use durable engineering resin and alloy which are considered for safe prblems. .Pedal Specification:the 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. .Excellent Control on Pedaling: Good metal grips on the bottom and nylon type straps on the top will keep your feet positioned just right on the pedals,excellent control while pedaling your bike. .Safe Use : 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 safety. .International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. .