MIDWEST PLASTICS manufactures a line of carriers, ‘Pucks’, for use in filling non-magnetic aerosol cans and ‘stick’ type dispensers. These pucks, are available for cans from 35MM diameter up to 66MM diameter, and have an outside diameter of either 2 11/16 inches or 3 inches. Our pucks, controlled to a weight of +\- 1 gram, have magnetic disks embedded in the plastic, with a selection of openings allowing easy access for date coding. MPI’s pucks have interchangeable color coded fins for each can size, which hold the cans in place, compensating for variances in the can diameter.