Features: Experience precise and durability with our 20piece mounted bead reamer set, featuring 5 different shapes of drill bits designed for rotary tool. These grinding tool engineered to withstand wear, ensuring long lasting performances across various materials. For professional woodworkers, construction worker, and DIYer enthusiasts who demand efficiency and accuracy in their projects. Perfect for drilling through wood, plastic, and metal, these grinding head are versatiled enough for home renovations and industrial manufacturing tasks. Enhances your tool collection with this comprehensive set, providing the reliability and precise needed for intricate carving and detailed work on diverses surfaces. Specifications: Length:Approx. 70mm/2.75inch Color:Silver Package Includes: 20pcs Grinding Bits note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorings of the item. Thanks for your understandings.