Oregon 72-004 Wheel Drive 8 x 2 Replaces Murray 672441 Tire And Wheel Size 8-Inch x 2-Inch Replaces Murray 672441 Oregon Part 72-004 Hub Is Plastic With A Gear And An Offset Tread Design: Turf Tire And Wheel Size 8-Inch x 2-Inch Replaces Murray 672441 Bearing I.D: 1/2-inch Hub Length Is 1 3/8-Inch Hub Is Plastic With A Gear And An Offset Tread Design: Turf