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Metric carbide chucking reamers come in standard sizes expressed in millimeters. Straight-flute reamers push chips forward into a hole as they enlarge it to an exact size for a precise fit when installing fasteners or other parts. They are the most commonly used style of reamer. These chucking reamers are made from carbide steel and have a bright finish that is unaffected when their cutting edges are resharpened. The reamers' straight shank mounts to the chuck of a drill press or similar machining tool. This listing is for each. Technical Specification Item Chucking Reamer Measurement System Metric Reamer Size 8.50 mm Decimal Equivalent 0.3346 Shank Type - Machining Straight Shank Dia. 8 mm Flute Type Straight Number of Flutes 6 Flute Length 33.00 mm Spiral Direction Neutral Coolant Fed Non-Coolant Through Overall Length 117.00 mm Material - Machining Carbide Finish - Machining Bright (Uncoated) Cutting Direction - Machining Right Hand Chamfer Angle 45 Degrees Primary Material Application All Materials Secondary Material Application All Materials Primary Material Application ISO Code K, M, N1, N3, N4, O, P3, S Secondary Material Application ISO Code H Reamer Application Through Hole Material Applications Aluminum, Brass, Bronze, Cast Iron, Copper, Heat-Resistant Alloys, Magnesium, Stainless Steel, Steel Size - Decimal 8.50mm - 0.3346