Four loose wheels of the same diameter, matched to tape size, are stacked upon one another, flange side up. The machined surface of each wheel is protected by a pair of 2″ x 4″ wooden spacers, one placed on either side of the bore openings between the first, second and third loose wheels for a total of six per package. The stack of wheels is stabilized by inserting a 6″ x 6″ block of hardwood into the bore openings. A .5″ x 12″ x 12″ plywood end cap is nailed to the top of the stabilizing block in order to keep it from falling through the loose wheels when they are being handled.
Other sizes are included as 30A and 30C.