German style hose clamp 1.bandwidth:9mm / 12mm 2.certificate:ISO9001: 2008 3.various sizes 4.material:w1 w2 w4 w5 German style hose clamp1.bandwidth:9mm / 12mm2.certificate:ISO9001: 20083.various sizes4.material:w1 w2 w4 w55.some information:6.pictures.