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These high-speed steel chucking reamers come in sizes that fall between standard trade sizes, and their sizes are expressed in decimal inches from 0.2060 to 0.3755. 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 high-speed 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 Decimal Inch Reamer Size 21/64 in Decimal Equivalent 0.3295 Shank Type - Machining Straight Shank Dia. 21/64 in Flute Type Straight Number of Flutes 6 Flute Length 1 1/2 in Spiral Direction Neutral Coolant Fed Non-Coolant Through Overall Length 6 in Material - Machining High Speed Steel Finish - Machining Bright (Uncoated) Cutting Direction - Machining Right Hand Primary Material Application All Materials Primary Material Application ISO Code H, K, M, N, O, P, S Reamer Application Through Hole Size - Decimal 0.3295 in - 0.3295