Drill Ø16mm diamond hollow drill bit with countersunk ring Ø26mm TESCH

Manufacturer: TESCH,
Type: 667928.2 / S16-26, 667929.2,
Drill bit length approx. 74mm, 1/2” external thread.
The countersunk ring is adjustable and removable,
Weight: 212 g,
Application: Glass industry,
Condition: Good, second-hand