Product Info Catalog Hardware Builders Hardware Springs 1/4-Inch OD x 2-1/2-Inch-Long Heavy-Duty Extension Spring, 2-Pack 1/4-Inch OD x 2-1/2-Inch-Long Heavy-Duty Extension Spring, 2-Pack Request a Quote UPC: 38594001196 SKU: 681122 Model Number: C-119 2 Pack, 1/4" OD, Extension Spring, 2-1/2" Length, .035" Wire Diameter, 2.03" Maximum Deflection, 8.46 LB Maximum Safe Load, Polybag.