M6001 Size: 0.75" Features: -Roller.-Threaded hex hub, die cast zinc inner race, steel ball bearings, plastic wheel, flat edge.-Size 0.75": 5.44"H x 3.81" W x 0.69" D.-Size 0.88": 5.44"H x 3.81" W x 0.69" D. Color/Finish: -Color: White.