This is a hand operated, portable bearing packer. It is ideal for packing several bearings in a short amount of time. It is for use with all car, boat, trailer and RV bearings having a minimum ID of 1/2 inch to a maximum OD of 5 inch. Height of 1/4 inch to 2 inch and rugged steel construction. Fits 35-50 pounds standard grease containers. Includes follower plate.