China One Piece SellingBrand:TanseenMaterial:Rubber,Polycarbafil insideTooth Profiles:HTD5MPitch:5mmType:ClosedWidth:30mmLength:1320mm,1325mm,1330mm,1335mm,1340mm,1350mm,1360mmHow to Caculate the Length of the Belts1.Know the type of your pulleys(X)2.Know the teeth of your pulleys(A,B)3.Know the space between the two Shafts(C)4.Contact us to help you get the size