Stainless steel, U-shaped, 3790 Tool Shackles connect to waisted or necked tools with a tapered midsection or tools with captive holes to create a secure tethering point. One-step, retrofit attachments feature a maximum safe working capacity of 15 lb. Shackles are approved to the ANSI/ISEA 121-2018 standard for dropped object prevention. Enhance security by adding adhesive (not included) to tighten.