Drill Ø16mm diamond hollow drill bit with countersunk ring Ø26mm TESCH

Manufacturer: TESCH,
Type: 667928.4 / S16-26, 667929.4,
Drill bit length 73mm 1/2” external thread.
The countersunk ring is adjustable and removable,
Weight: 212 g,
Application: Glass industry,
Condition: Good, second-hand