High grade Alloy Steel (Quenched and Tempered)material.
Design Factor of 4 to 1 for chain and 5 to 1 for wire rope.
Individually Proof Tested to 2.5 times the Working Load Limit (4:1), unless otherwise noted, with certification.
Each link has a Product Identification Code (PIC) for material tradceability, along with the size and the manfacture mark
Larger inside width and length for use with thimble.
Fatigue rated at 1.5 times the WLL with 20000 cyclic test.