Introducing SINOCOREDRILL's High-Wear-Resistance Reaming Shells for BQ/NQ/HQ/PQ models. Engineered for precision and durability, these tools feature optical operation and customizable weight for enhanced efficiency. Certified with ISO9001 and CE, they ensure consistent borehole accuracy across various applications. Available in Q, T, and B series, they are perfect for professional drilling needs. Experience top-notch performance today! Visit our website for more information!