XUEMEI Product Description: Quantity: 2 pieces Color: silver Size Material: 7mm, Length: 108mm, heavy duty, strong, can hold up to 500kg (1100lb), made of high quality stainless steel, sturdy steel construction, good performance, corrosion resistant, durable and safe. Safe and firm: Our hammock accessories are the parts you need to create a comfortable hanging chair indoors and outdoors, it attaches securely to your swing chair so you can twist and rotate without tangling or twisting, quiet, stress and vibration. Easy assembly Relieve collision: This swing hanger with hooks at both ends, the swing spring easily connects to your hanging chair without using any tools or complicated operations. The spring helps relieve stress from impacts, provides a more comfortable, softer feel and increases the lifespan of your hammock, in addition to your mounting surface. Wide range of uses: Enjoy your indoor and outdoor recreation with our spring swing hanging kit which is specially designed for hanging your swing bench, hanging chair, hammock or hanging chair, swing chairs, sandbag or other heavy object, introduces a unique smooth suspension system for hours of movement in silence with safe, smooth swing joy. Perfect for your patio, porch, horizontal tree trunk or ceiling mounting.