細牙全螺紋六角頭螺栓 A級和B級
Hexagon Head Screws, With Fine Pitch Thread - Product Grades A And B
六角頭螺栓 細牙 全螺紋
Hexagon Head Screws With Metric Fine Pitch Thread-Product Grades A And B
細牙六角頭螺栓
Hexagon head screws with metric fine pitch thread-Product grades A and B