Product Info Catalog Hardware Builders Hardware Springs 3/16-Inch OD x 2-1/2-Inch-Long Extension Spring, 2-Pack 3/16-Inch OD x 2-1/2-Inch-Long Extension Spring, 2-Pack Request a Quote UPC: 38594001110 SKU: 681098 Model Number: C-111 2 Pack, 3/16" OD, Extension Spring, 2-1/2" Length, .025" Wire Diameter, 2.52" Maximum Deflection, 4.26 LB Maximum Safe Load, Polybag.