Impact resistant, fiberglass reinforced nylon cylinders eliminates expansion and resists ultra-violet rays. Two expanding type seals, plus O-ring, eliminates high and low pressure leaks. Barbed cylinder fitting and an inserted tubular rod prevents hose blow-off and breakage. Product : BOAT LEVELER HYDRAULIC CYLINDE INSTA TRIM # 12727-A 8' HOSE Manufacturer : BOAT LEVELER CO. Manufacturer Part No : 12727