Makes it easy to safely maneuver snowmobile or plow in your storage area Heavy-duty steel with rust-resistant black powder-coated finish Four 2" diam. hard rubber ball-bearing casters on each dolly Big 1,500-lb. capacity per set. Includes two 7" x 8" front dollies (grooved for snowmobile skis or plow blade) and one 8" x 8" rear dolly.