The Large Motorized "Big Brother" carder has two variable speed motors, they are adjusted with a knob and have forward/reverse, which give a very large carding ratio. The motors are protected in a stainless steel bracket and never come in contact with any fiber, they are a direct drive and there is no belts on the machine to ever wear out. Large 12 1/2" diameter drum produces a 9x39" inch batt with teeth 1/2" long. Brush attachment, doffer and instruction manual included. Our biggest motorized drum carder, available in all types of cloth. We have 4 different tpi (teeth per inch) cloth types to chose from for carding any type of fleece, wool, silk, cotton, and more. fine (120tpi), medium (90tpi), coarse (72tpi),and extra coarse (54tpi). Frame is built with solid oak and has a clear polyurethane finish. it is 24" inches long 20" inches wide and total height is 15".and weighs 40lbs. Sealed bearings. It has a convenient easy slide out tray for catching any debris that falls under the carder. Maintenance free. Comes completely assembled and ready to card. Additional drums can be purchased which allow you to card all types of fleece and wool on one carder. also more information on our website online at brotherdrumcarder .com Feel free to email with questions, excellent customer service is our goal. Please specify if you want a fine or medium tooth carder when you purchase. Thank you.