Serious about grading your sports cards? This handy tool helps you figure out a card's thickness, which is key for knowing what size toploader, one-touch, or screwdown case it needs. It's NOT just a printed piece of paper – it's an actual, ungraded trading card manufactured to a precise 20-point thickness. You simply place your card next to it to compare. It covers sports like Baseball, Basketball, and Football. The seller includes a BONUS toploader with it too, which is a nice touch. This is a must-have for any collector who buys supplies in bulk or sends cards off for professional grading. Knowing if a card is standard thickness, a 'thick stock' card, or has a relic piece embedded can save you from buying the wrong storage supplies. A simple, clever, and affordable tool that helps protect your collection. Keep it with your grading supplies for quick reference. Brand new condition.