SET OF 2 SOLID SHACKLES: Our set includes 2 large stainless steel lifting shackles. These rings are only intended as a tether and cannot be used for rock climbing or for heavy loads. SCREW SHACKLE: These stainless steel shackles can be quickly locked and attached to a wide range of attachment points. Steel shackles are used in operations and static lifting systems to connect cables, chains, ropes, and other accessories. Screw shackles are generally used for non-permanent applications such as camping shades. OUTDOOR USE: This set of stainless steel carabiners can be used for many outdoor activities such as camping and travel because they are rust resistant. Create an outdoor pulley/hoist system for a clothesline with these shackles. They can also be used to hang a bench or as a vehicle accessory. Use them for outdoor furniture or to tow a vehicle. INDOOR USE: Use these lifting rings to keep all your keys together. They will be excellent for school bags. Attach a snack bag to your kids' backpack so they won't forget it. Our stainless steel shackles are perfect accessories for your garage or workshop. Use them to hang your power or gardening tools. Use it to connect chains together or for jewelry making.