1) Ductile iron Handle, or malleable cast iron.
2) The adjustable/mobile jaw:with high quality 45# Carbon Cast Steel /Drop forged steel, 45# The fix  jaw: cast iron, 60#(heat treatment with quench and tempering ,jaw teeth induction quenched
3) The nut: 45# Carbon Cast Steel /45#  Drop forged steel

4) Model Number: 8", 10", 12", 14", 18", 24", 36", 48"
5)Packaging Detail: Neutral package,every product with one plastic bag,the box is the standard export box.
if you are interested in  it , please feel free to contact with me .
Regards !