Product Info Catalog Hardware Builders Hardware Springs Compression Springs, 1-In. OD x 3-1/2-In., 2-Pk. Compression Springs, 1-In. OD x 3-1/2-In., 2-Pk. Request a Quote UPC: 38594008263 SKU: 639930 Model Number: C-826 2 pack, 1" O.D. x 3-1/2" compression spring, .120 wire diameter, 1.717 solid height, 66.6 lb maximum safe load.