Solid & Durable Construction: Hatch springs are made of 316 stainless steel, resists rust and corrosion, making it perfect for harsh marine environments. Dimensions: Spring Length:10"(254.6mm); Full length:11-5/8"(295.0mm); Spring Outer diameter:3/4"(19mm) Supports lids up to 30 lb,Fit for hatch door triangle fixture end,strong and durable Simple & Reliable Mechanism: Gas struts can fail over time and put unnecessary stress on mounting points. Our stainless steel spring offers a simpler, more reliable alternative that’s trusted by boat owners and marine enthusiasts worldwide. Proven Durability: Heavy-Duty Design, Say goodbye to frequent replacements—our springs are engineered for years of trouble-free use. Built to withstand tough conditions, ensuring long-lasting performance. Perfect for marine cabinets, hatches, and flip-up doors. Upgrade your boat’s hardware with confidence. Choose our 316 stainless steel marine spring for a dependable, rust-free, and long-lasting solution. Package including 2 pieces