Drill bit for drilling holes has shaft extending from first drill head to second one on other end of bit

摘要

The drill bit (1) has a shaft (2) with at least one swarf groove (7) and with a first drill head (5) on the first end of the drill bit. The shaft extends from the first drill head to a second drill head (6), which is on the other end of the drill bit. The shaft may have webs (8) between the swarf grooves with a guide bevel (10) along the first adjacent cutter.