Spindle Assembly / MTD 918-06991Pack Size:1MTD 618-06991, MTD 918-06991MTD most 200 and 700 series mowers with 42" deckHeight: 6 3/4 ", OD of Pulley: 5 1/2 ", Specially designed: to replace 6 pt. star center hole, Includes nut, spacer, grease zerk and pulley, No threads in housing, use self-tapping screws