China One Piece SellingBrand:TanseenMaterial:Rubber,Polycarbafil insideTooth Profiles:HTD5MPitch:5mmType:ClosedWidth:15mmLength:180mm,200mm,205mm,210mm,225mm,230mm,235mmHow to Caculate the Length of the Belts1.Know the kind of your pulleys(X)2.Know the enamel of your pulleys(A,B)3.Know the gap between the 2 Shafts(C)4.Contact us that will help you get the length