| 摘要 |
A countersink bit device suitable for quick-exchange chucks, the device comprising a body (4) having distal and proximal sides, said body (4) having a shank of hexagonal cross-section (2) projecting from the body proximal side (4), and two tips (9 and 10) attached to notches provided on said body (4), said tips (9 and 10) projecting from said body (4), presenting cutting edges. |
