This Centre Drill Forstner Bit, with a central tube in which to fix a normal bit as a drilling guide, permits one to precisely drill, free hand, large holes in situations where the hole must be drilled at an angle, for instance the holes to take spindles on a stair railing.
Included in bit's kit:
BORMAX bit
Pilot bit: extends 20 to 30 mm out of the shaft
Traditional centre point
Allen wrench
Rod for freeing jammed bit