The straight-flute design is recommended for most general purpose reaming.
1260 HSS Dowel Pin 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.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.