ITEM NAME:Mountain Bicycle Road Bike Fixed Gear Carbon Fiber Crankset Crank Protector C5G7 Mountain Bicycle Road Bike Fixed Gear Carbon Fiber Crankset Crank Protector C5G7 Name: crank protective cover meterial : Silica gel Size : width 29mm thickness 15mm weight : 17g (one pair ) Color:Black it is suitable for above 95% crank in the market ,high stength product package include: 2 X crank protective cover Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.