Trapeze Springs are made exclusively for Merrithew™ Cadillac/Trapeze Tables, Reformer Vertical Frames and Wall Units. Each is nickel-plated and heat-treated to protect the base material of the spring. This ensures the quality and integrity of its tension throughout its life. Sold as a pair, includes 2 spring clips. Note: this item is for use with Merrithew™/STOTT PILATES® equipment only. Details: Spring performance Our springs are built to withstand vigorous use in professional or commercial environments To maintain performance and warranty, springs require replacement every two years Spring resistance details Overall length of the spring is 18 in with an initial tension of 14.75 lbs (load required to open the coils without extension) Spring rate of 3.888 lbs/in (load required to extend spring every inch after the initial tension is applied) Specs: Trapeze Spring / Stability Chair · Heavy Spring 14.75 lbs +/- 1.5 lbs(6.7 kg +/- .7 kg) 3.888 lbs/in +/- 5%(.68 N/mm +/- 5%) 18 in(45.7 cm) 1.2 in(3 cm) Red Warranty - 2 years all springs
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