A set of mainly unused drill bits made by Deloro Stellite. These specialist drill bits are designed for steels above C.51 Rockwell..
For the drill to cut sufficient heat has to be generated at contact to anneal the steel being drilled. Largest drill bit retails for around £100+ new .
Includes sizes: from 1/8” up to ½” (3/16” includes a quantity of three).
Condition: Please see photos for condition.
