In hardware tools, the spiral groove drills and straight flute drill is more common as a tool, can be used in various manufacturers and small workshops, then you know how they distinguish it?

Compared with the spiral groove straight flute drill center drill, with a smooth cutting, chip flutes, good strength, long life, can increase the amount of feed, finish machining, etc., however, processing more difficult.
ok, we have good tools Changzhou is a professional production of spiral groove drills and straight flute drills years of reliable manufacturers, where we are committed to our products is the best place for you, give you the most satisfactory service.