The straight-flute design is recommended for most general purpose reaming.
They are regularly pointed with a 45ยบ chamfer.Chucking Reamers are designed for accurate reaming in most materials using all types of equipment including screw machines, turret lathes, drill presses, and machining centers..2650 HSS Straight Shank Chucking Reamer It is recommended over the straight-flute for more difficult materials, better surface requirements, and applications with an interruption such as a keyway or cross hole.