Aluminum Alloy Construction - Made of high strength aluminum alloy material these bike pegs are strong and weight bearing and reliable Perfect Fit - Size 100 mm by 28 mm designed to fit 3/8 inch axles - Suitable for road bikes mountain bikes track bikes and MTBs Anti Skid Design - Knurled surface provides excellent anti skid performance - You can ride with confidence that your feet stay securely in place Easy Installation - Mount on the rear axle of your bicycle and tighten the shaft screws to a minimum of 6 mm - Quick and hassle free Use Scenarios - Scenario 1: Add stability on rough roads or trails giving you a secure foot position on the rear axle during everyday riding - Scenario 2: Upgrade bikes that use 3/8 inch axles for road mountain track or MTB use for reliable pegs and added functionality - Scenario 3: Replacement upgrade when existing pegs wear out or you want a quick retrofit on a rear axle