Prime-Line Products SP 9649 Porch Spring, 1-9/16-Inch by 7-3/4-Inch - .227 Diameter Go to amazon.com Related posts Top 16 best porch swing spring 2022 FeatureMade for suspending Porch Seats from ceiling raftersContained spring uses opposing compression wires352 lb capacity1-9/16" X 7-3/4" DescriptionUtility compression spring used for hanging swinging porch swings, internal clip compression, 352 lb capacity.