SA's Absolute Leader and Tippet selection features proprietary copolymer blends that drastically limit water absorption while maintaining optimal suppleness Attwood ST34-60-5 Hatch Lift Gas Spring, 12 - 20, 10mm Socket, 20 Lbs Popular replacement gas springs for the aftermarket. Attwood SL29-40-1 Hatch Lift Gas Spring, 21.1 - 36.3, 13mm Socket, 40... Can be for saltwater use ñ and any other application where good looks and quality really matter. The pressure tube and rod are super-tough #316 stainless steel alloy. They're the best springs you can buy for livewells, line lockers, deck hatches, and other moisture-prone areas. ATTWOOD SL2405, ATTSL2405 Spring Lift Company Catalog Attwood Attwood Boat Gas Spring Shock SL34-60-1 | 12 - 20 Inch 60lb Sl 34 20 Spring Lift