Machinists and metalworkers, this Auniwaig 20mm H7 chucking reamer is a precision tool that delivers professional results for bore finishing! Made from high-speed steel (HSS), this reamer handles high temperatures, offers excellent wear resistance, and maintains good toughness through demanding applications. The H7 accuracy rating means it produces precise, consistently sized holes with smooth finishes that require minimal additional work. The 6 straight flutes allow chips to collect efficiently during cutting, making it well-suited for most materials including stainless steel, carbon steel, cast iron, die steel, alloy steel, and non-ferrous metals. The round shank design works with a wide variety of tool holding systems - perfect for screw machines, turret lathes, drill presses, and machining centers. As an uncoated tool, it's versatile enough for a broad range of applications without specialized treatment requirements. Whether you're working on precision parts, repairing existing holes, or need to enlarge holes to exact specifications, this reamer delivers the accuracy and finish quality that professionals demand. The 20mm size (approximately 0.78 inches) is a commonly used dimension that makes this tool useful for numerous projects. If you need to achieve smooth, accurately sized holes in your metalworking projects, this chucking reamer provides that reliable performance that makes the difference between amateur and professional results.
Free 30-day returns 
Free 30-day returns
