This cylinder is used on the rear of all our hydraulic w/airbag Any Level Lift systems for the dual rear wheel trucks. This welded hydraulic cylinder is rated at 3000 PSI, has a 2.5 in. bore X 3.44" in. stroke and cross-tube mounting. Designed for demanding double-acting applications this welded cylinder exceeds the highest standards and is built to ensure maximum reliability and performance. This cylinder is packed with these features: Engineered with a robust ductile iron piston for unparalleled durability in demanding environments. Enhanced security and stability ensured by the Grade 8 zinc-plated lock nut. Reliable sealing mechanism featuring a nitrile O-ring with hytrel backup for consistent, leak-free performance. Exceptional rod-sealing capabilities provided by the PolyPak design, incorporating a polyurethane U-cup with a Nitrile O-ring expander. Sturdy steel cross tube mounts serve as reliable end mounts, ensuring stability and facilitating effortless installation for hydraulic systems. Uncompromising seal integrity guaranteed by the piston's O-ring for its inner diameter and Hallite 755 piston seal with wear rings for the outer diameter. Finished in a sleek black coating, not only enhancing its aesthetics but also offering protection against corrosion for long-lasting performance.