CanDo Adjustable angle wooden incline board has 14" x 18" foot board with non-slip tread. Has positive lock adjustment handles. Angle of inclination varies from 5 degrees - 10 degrees - 15 degrees -20 degrees - 25 degrees. Non-slip bottom surface. Natural finish. Wooden 5-level Incline Board - 5, 10, 15, 20, 25 Degree Elevation - 14" x 18" Surface