material: Carbon steel ; surface: hot dipped galv ,zinc galv,red painted Process: Drop forged, E- galvanized material: Carbon steel ; surface: hot dipped galv ,zinc galv,red painted Process: Drop forged, E- galvanized Eye Hoist hook* Forged, quenched & tempered* Proof Load is 2 times working load limit* Ultimate Load is 5 times working load limit* 320C-Carbon Steel Alloy steel Eye Hoist hook