Rectangular adjustable angle ball rebounder returns balls with speed force and angle consistent with your throw. The angle of inclination adjusts from 0-42 degrees. The 39 diagonal surface measures 27. x 27.5 . Set includes Rectangular Rebounder and 5 pliable medicine balls (1 each 2 4 7 11 15 lb). Adjustable Ball Rebounder - Set with Rectangular Rebounder 5-balls (1 each: 2 4 7 11 15 lb)