2 bearings in the strut. The front bearing is a standard bearing (
http://www.bocabearings.com/bearing-...0125x025x09375) and is held in place by the front of the strut. Either the nose cone of the strut or the stuffing tube that is inserted in the strut. Then there is a piece of brass tubing used as a spacer to keep the bearing from walking to the rear of the strut. then a flanged and single shielded bearing(
http://www.bocabearings.com/bearing-...50x02500x01094). I machined my strut so the bearings fit nicely, but if they are a little loose the drive dog and shaft will keep the bearings in the strut. I just use the shielded bearings.