The 3-PLAY is designed to change from the adjustable horizontal bar to the adjustable uneven bars and to the adjustable parallel bars. Base extensions included! The height of each bar will adjust from 3ft to 5ft every 6 inches, (36, 42, 48, 54, 60 inches.) The width will adjust from 18 inches to 36 inches every 3 inches. (18, 21, 24, 27, 30, 33, 36 inches.) The 1-1/2 inch wood bar and base is 4ft wide and will fit any normal 4X8 gym mat. Made with heavy duty steel powder coated Blue. The bars weight limit is 125 LBS. Design includes rubber caps on the bottom frame for traction and lock knobs for simple adjusting. Professional protective mat should be used with this product to help reduce the chance of injury. 1 year warranty. Please allow an additional week for shipping.