Surgical short drill with internal cooling. A short cylindrical bone drill for contra angle with external cooling for screw implants. Used to prepare the bone bed implant.
With a special through-hole length of the drill, which is intended for internal cooling of the drill at preparing bone. Made of stainless steel.
Accordingly, the diameter of a drill is color coded.

401220 - pilot (first) bone drill
401228 - 2nd expanding bone drill

401232 - 3rd extending bone drill
401237 - 4th extending bone drill
401242 - 5th extending bone drill
401252 - 6th extending bone drill

Surgical Short Drills Internal Irrigation