(4) material:forged alloy steel (5) minimum safety factor 4:1 (6) proof tested to 400% rated load (7) fatigue tested to 150% rated load over 20, 000 cycles of tensile strength test passed. (8) proof tested to 2.5 times working load limit (9) heat treatment: quenched & tempered (10) surface: color-painted, self-colored or others (11) full tracebility (12) size: m8-m100 Specifications¡¡¡¡§¬oo 1. Material: alloy steel (main 42crmo¡¡¡¡§¬o© 2. Multifunctions 3. High quality 4. Heat treatment and tensile test precision hoist rings 5. Mt¡¡¡¡§¬o¡¡¡¡¨¬¬magnetic particle testing¡¡¡¡§¬o© Packaging & delivery Packaging detail: carton or + steel pallet Delivery detail: about 15-25 days upon receipt of your order Contact us for further information My email address is sales at nices dot com