Extension Spring 8-1/2" L X 7/8" D Nickel-Plated - Prime-Line SP 9676 These extension springs from Prime-Line are constructed from 0.028 gauge, heat-tempered, spring steel wire plated in a bright nickel finish. They offer superior strength and long lasting tension. These springs feature a double loop, closed end design and measure 8-1/2 inch in length by 7/8 inch in diameter. This type of spring can be used on toys, equipment, tools and for a variety of other household applications. Each Weight 0.400 LB Spring Type Extension Material Steel Wire Gauge 0.105 Product Type Spring Diameter 7/8" End Type Single Loop, Closed Length 8-1/2" Packaging Type Bulk Number in Package 1 pk Finish Nickel-Plated Alternative UPC 049793096760