Tip and roll bleachers are ideal for indoor use, All aluminum seat planks and under-structure provide a lightweight, stable bleacher that is easily tipped for easy mobility, These bleachers are a great addition to any field or facility, Seat planks are 10" wide non skid aluminum, Planks are supported by a strong aluminum under-structure, Transition foot prevents floor marking, Includes four 4"" non-marring swivel casters, 7, 5" Long, 3 Row, SKU: JYP1059