Product Info Catalog Hardware Builders Hardware Springs Extension Spring, 1-1/16-In. OD x 5-1/2-In. Extension Spring, 1-1/16-In. OD x 5-1/2-In. Request a Quote UPC: 38594002612 SKU: 681528 Model Number: C-261 1-1/16" OD, Extension Spring, 5-1/2" Length, .120" Wire Diameter, 3.62" Maximum Deflection, 48.2 LB Maximum Safe Load, Bulk With UPC.