Zig zag furniture and auto upholstery oil tempered sinuous springs 9 Gauge, 10 foot length roll made in the USA PLEASE NOTE: These springs come in a ROLL - DO NOT order these if you do not have the proper tools. NOT for DIY (Do-It-Yourself) unless you have worked with these springs before. This is a 10' ROLL and will require bolt cutters and spring benders (see photo). Inquire about pre-cut section options - see image for gauge comparisons - you may cut to the size(s) you need for the job or order custom lengths from us Composed of high-carbon, high-tensile oil-tempered spring wire. Perfect for seat and furniture restoration (recliners, sofas, truck and auto bench seat CUSHIONS) 9 gauge is much heavier than the 11 or 12 gauge and is used mainly for seat cushions (lighter 11 and 12 gauge are used mostly for seat backs)