A part size:Width 13mm,Thickness 8mmThe V belt K materials is rubber.If you've got a massive demand, you could have a discount.Remarks: If you've got particular needs, please touch us, we are able to customize according to your needs!Notes:Light taking pictures and various exhibits may cause the color of the thing in the photo a bit of assorted from the genuine thing.The measurement have a definite error. (Due to diverse production dates, the text printing at the product will also be different)