产品介绍：
tr no.:562 4216 description:extension length(mm):85 φ(mm):12.1/10 tr no.:562 4223 length(mm):105 φ(mm):12.1/10 tr no.:562 4230 length(mm):115 φ(mm):12.1/10 tr no.:562 4247 length(mm):125 φ(mm):12.1/10 tr no.:562 4254 length(mm):140 φ(mm):12.1/10 tr no.:562 4175 length(mm):160 φ(mm):12.1/10 tr no.:562 4261 length(mm):180 φ(mm):12.1/10 tr no.:562 4278 length(mm):210 φ(mm):12.1/10 tr no.:562 4285 length(mm):270 φ(mm):12.1/10