Help preserve the environment with the proven performance and unparalleled protection of Green Marine ISO-32 100% biodegradable hydraulic fluid. Engineered to exceed industry standards, this environmentally responsible hydraulic fluid is made from an American-grown annually renewable resource and surpasses the highest standards of biodegradability. Pair it with your Power-Pole shallow water anchor for the ultimate combination to enjoy and preserve our precious resources. Also works for jack plates, trim tabs, hatch lifters, inboard/outboard tilt & trim and more.