Drill bit Ø24mm Diamond hollow drill bit with countersunk ring Ø24-30mm TESCH

Manufacturer: TESCH,
Type: 668134-7 / S24-30,
Drill bit length approx. 71mm,
1/2″ external thread,
The countersunk ring is adjustable and removable,
Weight: 308 g,
Application: Glass industry,
Condition: good, second-hand