Drill Ø8mm diamond hollow drill bit with countersunk ring Ø18mm WENDT

Manufacturer: WENDT,
Type: 22943141 / S8-18,
Drill bit length approx. 74mm, 1/2” external thread.
The countersunk ring is adjustable and removable,
Weight: 161 g,
Application: Glass industry,
Condition: good, second-hand