The patented design of Palmer Power Springs provide a lively bounce and will not fatigue, set or twist out of position. Each spring is a full 4" in height and 2" in diameter, and the set includes spring, top mounting cap, bottom mounting cap, T-nut, machine washer and fender washer. When constructing a spring floor, use 32 Palmer Power Springs per 4' x 8' panel; 36 Springs per 4' x 8' Panel for constructing 8' wide tumbling strips.
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