Precision cone reamer set for accurate hole alignment and enlargement. Made from speed steel (HSS) for durability and longlasting performance. Sizes: 3/8', 1/2', 5/8', and 3/4'—covers common hole requirements in metal, wood, and alloys. Function: Precisely aligns existing holes and enlarges them smoothly, delivering accurate hole geometry and a clean finish. Drill and durability: Includes a robust drill design to improve drilling efficiency and reduce the risk of breakage when enlarging holes. Material and compatibility: Suitable for steel, metal, wood, and alloy materials; built to handle multiple materials and applications. Benefits: Accurate alignment, smooth hole surfaces, reduced rework, and versatile size options for a range of projects. Use scenarios: Automotive assembly: enlarge and align bolt holes in steel brackets to ensure correct mounting fit. Woodworking and furniture: resize pilot holes in hardwood or plywood for precise fittings or drawer hardware. Machinery maintenance: enlarge and align holes in metal housings or brackets to fit components with clean, square edges. This set delivers reliable performance across common materials, helping you achieve precise, durable results with confidence.