Reinforced Construction: Made from hardened stainless steel, this reamer strength and longevity, wear even with frequent use Versatile Application: Perfect for drilling holes in quadcopters, helicopters, and boat models, including vents, body posts, and aerodynamic openings Complete set: Includes a reamer with a protective sleeve, providing everything needed for precisely and efficient hole adjustments in various materials Ergonomic Design: The comfortable grip and balanced weight distribution ensures easy handling, making it suitable for both beginners and experienced craftsmen Adjustable Precisions: This reamer features a 0 14mm adjustable ranges for high precisions drilling and enlarging holes in model parts, ideal for DIYer projects and, Manufacturer: Mekalero