Product Info Catalog Hardware Builders Hardware Springs Extension Spring, 1-1/16-In. OD x 7-In. Extension Spring, 1-1/16-In. OD x 7-In. Request a Quote UPC: 38594002650 SKU: 681544 Model Number: C-265 1-1/16" OD, Extension Spring, 7" Length, .105" Wire Diameter, 7.19" Maximum Deflection, 33.4 LB Maximum Safe Load, Bulk With UPC.