XIANQI Package include:2pcs Heavy Duty Springs. Size: Length 4.5 inch (100 mm), Width:1.56" (40mm), Spring Steel Diameter: 0.27"(7mm) Fit Almost Swings Porch Swing Punching Bag Hanging Chairs Hammock Chair This porch swing spring is Zinc plating Galvanized high-carbon steel Wire spring coil, Sturdy and Anti-corrosionClear Coated for Added Weather Resistance Spring Max Load Bearing 700lb Capacity Heavy Duty For 1 pcs Sturdy Steel Construction and help relieve stress from impacts, provide a more comfortable, softer feel and will increase the lifespan of your hammock, in addition your mounting surface Description: Package include:2pcs Heavy Duty Springs. Size: Length 4.5 inch (100 mm), Width:1.56" (40mm), Spring Steel Diameter: 0.27"(7mm) Fit Almost Swings Porch Swing Punching Bag Hanging Chairs Hammock Chair This porch swing spring is Zinc plating Galvanized high-carbon steel Wire spring coil, Sturdy and Anti-corrosionClear Coated for Added Weather Resistance Spring Max Load Bearing 700lb Capacity Heavy Duty For 1 pcs Sturdy Steel Construction and help relieve stress from impacts, provide a more comfortable, softer feel and will increase the lifespan of your hammock, in addition your mounting surface Color: silver Size: length 100MM Products include: 2x tension springs