GZ-17-30 – Nipple 1/2-2- UNF / 1/2-20 UNF – length 34 mm – hex 13

GZC-723 – Nipple, equal – M12x1 / M12x1

GZC-713 – Nipple 1/2 UNF / 1/2 UNF – length 34 mm – hex 13

GZ-17-23 – Nipple M12x1 / M12x1 – length 46 mm – hex 13

GZC-715 – Nipple M10x1 / M10x1 – length 44 mm hex 14

GZ-13-20 – Gas nipple – 5/8 UNF – lenght 46 mm