Pilot pin for the GLOB / Rotabroach HSS trepanning drill

For HSS drills, pilots pin are available in both the long (50mm) and short (30mm) versions.

Pilot pins are essential for the use of annular cutters, as they provide the flowing practical uses:
- Centration of cutter
- Control of oil flow
- Slug ejection

As plain as a pilot pin may look, all of these uses require high-precision and extremely low tolerances - just to make sure the centre is exactly the centre, oil flow starts and stops when you need it to, and the slug does not get stuck inside the cutter.