PN#580070 SKU#17981 Double Spring Tender Kit. Kit includes 16″ Springs. 16″ spring: plated for added corrosion resistance and double looped ends for additional strength. Snap clip: rust resistant stainless steel which clips easily onto a tracker bar or pogo stick. 3 hose holder assembly: neatly holds two air hoses and an electrical cable. Velvac plastic tubing: protects spring from the elements while giving a clean look.