Stem Type: Friction Ring Wheel Dia.: 5" Wheel Width: 1-1/4" Overall Height: 5-3/4" Wheel Material: Rubber Wheel Color: Black Core Material: Rubber Core Color: Black Wheel Bearings: Plain Stem Length: 2-1/4" Brake Type: Over-the-Wheel Cam Raceway: Double Ball Frame Finish: Polished Zinc