hoist shackle Shackle G2130 SHACKLE SERIES Hoist Shackle, National Standard Hoist Shackle, American Standard Hoist Shackle SHACKLE Â The material is alloy steel.Dip coating,painting,galvanized,hot-dipped.Safety factory 4times or 6times,testing load 2.5times. More information you can view here.