4.2mm Chucking Reamer HSS With Straight Flutes For Lathe Milling, Pro Grade Precision, 0.165 Inch Cutting Diameter, H7 Tolerance, Round Shank, 75mm Overall Length, Heavy Duty Tool For Precise Machining, 1 Pc

4.2mm HSS chucking reamer with straight flutes - H7
✔️ 4.2 mm cut dia, 19 mm tool edge, 75 mm length, 1 pc

This precision chucking reamer is designed to deliver accurate hole finishing in lathe and milling work. It is ideal for shallow bore reaming and helps achieve true roundness, straightness, and concentricity in stainless steel, cast iron, aluminum, plastic, and wood.

✅ Cutting diameter: 4.2 mm / 0.165 in
✅ Tool edge length: 19 mm / 0.75 in
✅ Overall length: 75 mm / 2.95 in
✅ Shank: round, metric sizing (fits metric collets)

💡 What is a high-precision chucking reamer used for in precision machining?

This handy tool is used to finish bore holes to tight tolerances in lathe and milling work, improving roundness and concentricity.

- precision bore finishing for tight tolerances in lathe and milling - improves bore roundness and concentricity in metal or plastic - compatible with metric collets and standard milling setups - reduces need for rework by delivering consistent hole size ✝️