If you're a card dealer, you know what this is. It's a card, usually made of plastic, which is kept on the bottom of the deck to conceal the bottom card and also ensure the players you're not dealing from the bottom of the deck.
Our cut cards are made of two thicknesses (0.025" each) bonded together with cross grains for stability. They are sized for a standard Poker deck (3.5" x 2.5") or for a Bridge deck (3.5" x 2.25"). Currently we only offer Curly Maple but are looking into other varieties of wood.