Product name:drive wheel Colour:black or white Raw material:plastic Size:can ... , 1:8 size: 7mm, 8mm Capacity load: 10kg, 17kg, 24kg Drive wheelRatio:1:3,1:5, 1:8size: 7mm, 8mmCapacity load ... , 1:8 size: 7mm, 8mm Capacity load: 10kg, 17kg, 24kg Drive wheelRatio:1:3,1:5, 1:8size: 7mm, 8mmCapacity load ... .0771:8Capacity LoadW=140mm Kg.24 High Quality Black colour Drive wheel for window parts