XUEMEI about this item: Wide usage: Our spring hook fits almost all kinds of hanging chairs, hammocks, egg chairs, wicker boxes, full set of sandbags, yoga equipment, flower baskets, etc. And any other favorite sport .High Load Capacity: Made of high quality spring steel, heavy duty steel construction ensures a maximum load of 450kg per spring. high hardness, non-toxic and pollution-free environment. Can be used with confidence. Durable: The hammock spring is galvanized on the hardened spring steel, which is anti-corrosion and anti-rust, improves the weather resistance and service life of the porch swing spring. Buffer Function: The spring absorbs shock from the movement of your hammock to help relieve stress from impacts, provide a more comfortable, softer feel, and reduce noise. increase the life of the hammock. Simply use: Length: 108mm, width: 40mm, diameter: 7mm, with hooks at both ends, easily connect what you need to hang without using tools or complicated operations. Product Features: -Made of high quality spring steel, strong and durable, load up to 500kg per spring. -Surface galvanized treatment, smooth and beautiful, corrosion resistant, long service life.-Reduce noise, helps relieve impact stress, provides a more comfortable and smoother feel. - With hooks at both ends, easily connect what you need to hang without using tools or complicated operations.-Ideal for almost any garden patio porch and garden swing, hammock, hanging chair, punching bag, rattan chair wicker basket, etc. Specification: Material: galvanized spring steel. Color: as shown. Spring diameter: 7 mm.Size: 108 x 40mm. Load capacity: 450 kg each. Weight: 195g per unit Quantity: 2 pieces. Package includes:2 x hammock chair spring