The Blades & Bits ZZ Turbo core drilling bit is a powerful tool for cutting through pre-stressed concrete – concrete treated with compression to ensure it is able to withstand heavier loads. Our turbo core bit is designed with an extra-long barrel and deep segments for faster, cleaner cuts. The ZZ Turbo is made from the most durable materials with high-quality diamonds and built to withstand the most rugged applications. The affordability and versatility of this core bit makes it a must-have for contractors and anyone looking for the most reliable diamond core bits. The ZZ Turbo is the most highly engineered core bit for hard pre-stressed concrete and built to exceed industry standards. Buy the ZZ Turbo core bit now for your next project to enjoy perfect cylindrical cuts for all of your toughest concrete cutting jobs, the most affordable prices on the market and our fast shipping on all orders.