The stainless steel spring then supports the lid, hatch or cover in the open position. Stainless steel spring with nylon ends for mounting with four countersunk screws (not included).HATCH SUPPORT SPRING (T-H MARINE)SKU: 7.33572E+11$21.49PriceQuantity*Add to CartFeaturesDescriptionLS2: Supports 10 lbsSize7/16” diam. x 8-1/2” LFastener#8