Whitecap Stainless Steel Hatch Spring The Whitecap Hatch Springs features a stainless steel spring that snaps into a straight, rigid position to support a opened hatch. To close the hatch simply bump the spring to allow it to bend and rotate at the mounting positions. The S-217C 10 long and S-218C 11-34 long feature an internal cable to prevent the spring from overextending and warping. Product Specifications S-216C Spring Diameter 716 Length 8-12 Fastener 8 Cable Included No S-217C Spring Diame