标准V带A型21号有效螺距圆周533毫米...
标准V带A型20有效螺距圆周508mm ...
Ultra E-Power V-Belt...
Ultra E-Power V-Belt...
Ultra E-Power V-Belt...
Ultra E-Power V-Belt...
Ultra E-Power V-belt...
Ultra e-Power V-belt...
Ultra E-Power V-Belt...
Ultra E-Power V-Belt...
Ultra E-Power V-Belt...
Ultra E-Power V-Belt...