The larger range Maxwell Windlass RC12HD Low Profile has option to be used with 10mm to 13mm (3/8 to 1/2 inch) chain spliced to 16 to 20mm 8-plait nylon rope on the Maxwell Wave Design™ chainwheel. The RC12HD with Capstain has the same Maxwell Wave Design™ chainwheel for chain to 8-plait rope and a seperate rope hauling drum. The rugged worm drive gearbox on the Maxwell RC12HD is designed to be used in light duty commercial applications.