This T-shank tapered reamer is suitable for reaming holes from 1/8 inch to 1/2 inch (3mm-13mm) and is designed for guitar bridge pin holes and more. Made of high-strength 45# steel, it is corrosion and abrasion resistant, ensuring that it will not be easily damaged in long-term use. Unique removable T-handle design provides better leverage for easier hole reaming and more precise operation. Precision-ground cutting edge can efficiently remove burrs from wood, plastic, tubing and other materials, widely used in woodworking, guitar repair and many other applications.