tappet roller pin 挺柱滚轮销 ; 挺杆滚轮销

leg roller pin 车脚小轮销钉

roller pin for fuel pump 喷油泵滚轮销

cam roller pin 凸轮滚柱销钉

valve rocker roller pin 气门摇臂滚轮销轴

valve tappet roller pin 气门挺杆滚子销

valve lifter roller pin 气门挺杆滚子轴销

clutch roller pin 离合器滚针