... 2mm 3) Standard: GB/T1527-199,DIN7340 copper tube fittin Copper tubes bushing Brass cutting-tubes Tube spacers Features:1) name:rivets, ... tubular rivets, brass rivets, brass pins,2) material:brass, copper ... , Antenna, Electric Brush, Antenna, Electric Brush, etc. Copper tubes bushing Brass cutting-tubes Tube spacers