The Troy-Bilt 3212HR ST120 is a hydrostatic lawn tractor built by Troy-Bilt in Port Washington, Wisconsin, USA. It features a 12 hp Briggs & Stratton 465cc single-cylinder air-cooled gasoline engine, Eaton 750 belt-driven hydrostatic transmission with infinite forward and reverse gears, and two-wheel drive with an open operator station. The tractor includes a mid PTO with an independent electric clutch. Dimensions include a 45 inch wheelbase, 69 inch length, 34.5 inch width, and 42 inch height. Tires are sized 15x6.00-6 front and 20x8.00-10 rear. Attachments available include 36" and 42" mid-mount mower decks, a snowblower, and a blade. Electrical system uses a 12 volt battery with negative ground.