1. Size: 8"-48" 2. Material: drop-forged with 45# carbon steel, heat treatment 3. pcaking: carton 4. production time: 30 days heavy duty pipe wrench 1. size: 8"-48" all size2. material: jaw teeth drop-forged with 45# carbon steel, handle is made of malleable cast iron.3. process: jaw teeth induction quenched, body heat treatment and phosphating.4. packing: i pc in plastic bag and inner box, then ...