Product details 1.Mini Size:17x13x6.7 inches 2.Max Size:17x13x13.7 inches 3.Material:WOOD 4.Color:Black 5.Packing:Carton/Carton Size:19.5x16x11 inches 6.NW:13lb/GW:15.5lb Features The piano pedal gives students proper weight balance and enables earlier use of Pianos. Advanced hydraulic device,more advanced than spring and longer service life. The piano pedal extender fits all models of pianos (grand, upright, console, spinet, Steinway, Wurlitzer, Yamaha, Kawai, Baldwin, and Kimball, etc.) and can be switched back and forth instantly. The adjusting mechanism of the piano pedal extender is made of heavy gauge steel. It is strong and durable and will not collapse or slip down after adjustment. The body of the pedal extender is made of WOOD and pedals are made of POLISHED BRASS. No assembly required. This product carries a oneyear limited against defects in materials and workmanship.