Stainless Steel: This hanging chair suspension kit is made of high-quality stainless steel, strong, durable, rust and corrosion resistant, and boasts high hardness. 551LB Load Capacity: With a 250kg/551lb high load capacity, the kit ensures your hammock, sandbag, and swing chair hang securely from the ceiling. Secure Connection: The welding is flawless, the connection is stable, and the hammock won't easily break, loosen, or sag. The surface is smooth without burrs. Spring Hook: The spring reduces wear and tear from impacts and shocks, extending the lifespan of the installed components. Wide Application: Whether hanging a hammock in the bedroom, swinging in the yard, or hanging sandbags in the gym, this heavy-duty suspension device is ready to use. Item Type: Swing Set Product Style: Square Door Buckle M8 + Spring Steel M7 + 5x40mm Self-Tapping Screws + Rubber Sleeve Material: Stainless Steel Product Color: As pictures shown Product Weight: Approx. 276g / 9.7oz Product Load Capacity: 250kg / 551LB Application: Suitable for yoga training, hammock, hanging chair, etc. 1 x Square Door Buckle 4 x Screw 4 x Rubber Sleeve 1 x Spring