The Jet S90 Series Hand Chain Hoist features a needle bearing design for reduced wear and longer life. The hoist has an all steel construction and heat treated load plates for increased durability and a lightweight, compact design for use in tight quarters. The grade 80 load chain is coated with black oxide to resist corrosion. The S90 Series has many safety features, including a weston style dual pawl brake system and alloy steel hooks that rotate 360 degrees and slowly stretch to indicate an overload situation. Standards: Complies with OSHA Regulations, ANSI/ASME B30.16 and HST-2 Standards, Load tested to 125% of capacity with certificate.