Our aluminum pipe wrenches provide the same features as the cast-iron models but weigh almost 40% less. The knurled adjustable nut operates smoothly for effortless adapting to pipe sizes up to 3". Constructed with sharp teeth for optimum pipe grip. Durable epoxy powder-coated finish for long life. Exceeds government specification GGG651 Type II, Class C. Well-balanced handle provides excellent leverage for loosening even the most stubborn pipes.