QUICK CHANGE TAPPING CHUCK BT40-WF20

With SK-40 shank and holder for TC-820 (Bliz system #2) tapping collet holder
which is suitable for thread sizes 5/16″ to 1/2″ (M10 to M22), chuck connecting diameter 1.220″(31mm).
Tension and compression feature allows taps to follow their own thread lead.
With extreme light compensation compression and tension operated by ball cage.