Eye Material Thickness: 1/4"Pin Diameter: 5/16"Opening Width: 1/2"Material: Drop Forged SteelFinish: Hot Dipped GalvanizedSafe Working Load: 850 lbs.Flat Head Clevis Pin With Cotter Pin For SafetySwivels Are Not Designed To Rotate Under LoadGalvanized Coating Withstands Rust And Corrosion And Is Excellent For Exterior ApplicationsDo Not Use For Overhead Lifting Or Support Of Human Weight