5 Pcs Industrial Grade Lifting Eyebolts M10 Forged to have higher performance Manufactured & Tested to Japanese Industrial Standards & Specifications: JIS B1168 Proof Load/Tensile Strength Lab Test Verified Hardness & Microstructure Lab Tests Verified Material Certified: Stainless Steel 304 ISO 9001 Manufacturer Marking ID: FY WLL (Working Load Limit) or SWL (Safe Working Load): 331 lbs or 150 Kgf Industrial Grade (JIS B1168) Lifting Eyebolt is the most widely used kind of heavy duty rigging hardware in Japan and specifically suited for lifting heavy objects like machine, electric motor, metal mold, appliance, sports and stage equipment. Forged to have higher tensile strength, fatigue strength, yield strength, and better reduction in area than casted.