Forged steel, hot dipped, galvanized. Open-throat design, wide bow, screw pin shackle requires no tools to assemble. Slip screwdriver blade or hand punch through pin/eye and tighten. Warning, Inspect regularly. Replace if worn, distorted or damaged. Ensure pin is fully engaged. Seize pin with wire. Do not exceed WLL [Work Load Limit]. Use only duty rated shackles, with embossed WLL, for overhead lifting.