The Rotabroach CK30 countersink bit countersinks holes up to 30mm diameter...
Price: £41.95 from Tooled Up
The Rotabroach CK40 countersink bit countersinks holes up to 40mm diameter...
The Rotabroach CK55 countersink bit countersinks holes up to 55mm diameter...
Rotabroach Long Pilot Pin for M42 high speed steel cutters....