Skatewarehouse Perforated Black Griptape. Made from Silicon Carbide with a self-adhesive backing. Approximate coarse rating: 90 grit. Our sheets are perforated with 100s of tiny holes, normally only found on premium brands, that allow air bubbles to escape from under the grip when applying. This means you get 100% surface adhesion to the deck and no lift, ensuring the best performance for flip tricks. At 90 grit, it’s tried and tested to be the perfect balance between grip and flip-ability while not being too aggressive on your shoes.