Features: - Suitable for pumps, hammocks, chairs, swings, and aerial yoga - Made of high quality and strength stainless steel - Hammock springs absorb the shock generated when the hammock is in motion - Designed with 360-degree strong ceiling hooks Specification: - Material: stainless steel - Load capacity: 450kg - Suitable for: hammock, chair, bed, basket, furniture, swing, etc Package includes: - 1 Swing hook - 1 Swing spring - 1 Mountaineering buckle - 4 Expansion screws - 4 Screws Attention: - Check the strength of the ceiling before installation - 450kg load limit - Not suitable for gypsum ceilings, mud walls, or other soft materials