INSTALLATION INSTRUCTION: 1, Mark the location on wooden and predrill a small Pilot hole. 2, Use a hammer to knock the screw into the wood. 3, Finally Twist the screw into the wood with a wrench and make sure the screw is completely fixed to the wood, a unique design and can be installed in minutes. Connect to items such as porch swing, hanging egg chair, hammock swing chair, six swing, heavy bag, punching bag,or sandbags that you need to hang. Material:Stainless steel colour:silver Package Contents: 4 x Swing hangers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Perfect for multi-child swings, indoors or outdoors for sports playscape accessories, hammock cradle chair suspension hardware kit, porch swing, bench swing, yoga hammock, , aerial yoga, porch swing springs, swings, rigging, kid's chair nook, swing seats belts, flying antigravity aerial yoga sling inversion hanging swing slide bracket accessories or swings seat, also hangs commercial grade swings, trapeze rings swings, super spinner. Swing Hangers are constructed with Stainless Steel and are the safest and strongest option for your indoor and outdoor hanging kit.