The hook body is manufactured with high-quality alloy steel by die forging
Minimum Ultimate Load is 4 times of the Working Load Limit.
Heat treatment.
There are signs such as WORKING LOAD LIMIT and product grade on the link.
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.