1.   A second handle is a very worthwhile extra with a percussion drill, allowing greater control of the drill bit.

2.   Full instructions for use are supplied, to enable even inexperienced d-i-yers to put the edge back on their drill bits.

3.   It began, according to one member of the drill crew, when they noticed their drill bit was heating up rapidly.

4.   It has reverse action which is basically used for removing debris and jammed drill bits.

5.   To catch up, Smith designed drill bits featuring synthetic diamonds with curved surfaces, rather than more conventional flat versions.

6.   Get the special drill bit to bore the correct-size hole for the job.

7.   The Canadian market has been very strong, which is important for Reed Tool which has a big market share up there for its drill bits.

8.   Now, one three quarter inch drill bits.

9.   Another has seismic companies suspending their listening devices in established wells, using the crunching of a drill bit as a source of vibrations.

10.   Boring inch by inch through rock and compressed sediment, the drill bit is guided by computers.