MTB Cycling Bicycle Flat Platform Bike Pedals Slip-resistant Ultra-light Aluminum Alloy Ball Bearing Material: Ultra-light Aluminum Alloy Item weight: 14.5oz; Item size: 4.7X3.7inchs Universal ball bearing type, compact and stylish Integrally-molded, made of high strength aluminum alloy, suitable and durable. Near the top of the tower round handle, antiskid shoes colleagues to avoid injury