... 3.Reasonable structure 4.Application:Td75,DTII,DTIIA,etc belt buckle frame 1.Corrosion resistant 2.Revolves smooth3.Reasonable structure 4 ... ,1200,1400,1600;1800,2000,2200,2400, etc 3.Belt type:sailcloth belt, nylon belt, polyester belt, steel-cord belt 4 ...