The Lisle Corp. Handy Packer Bearing Packer, No. 34550, quickly flushes out old grease and repacks bearings with less mess. The Handy Packer works on bearings up to 3-1/2" O.D. The grease stays in the tool cavity, not on the user's hands. To pack a bearing, place the bearing on the piston. Press down on the cap until the old grease is forced out and the new grease shows on top of the bearing.