.030 mil thickness - FREE 24 HOUR TURNAROUND ON THE .02 THICKNESS! Let's get to the "meat" of your advertising needs. These cow shaped stock magnets are perfect for promoting dairy farms and butcher shops. Always-in-stock and approximately 0.020 or 0.030 thick, they can be customized with your company name, logo and specific message then given out to potential customers. The finished design makes for an eye-catching promotional product whether it's positioned on a filing cabinet or refrigerator.