[Features] ● 2 roles for drilling and tapping. ●By using a reverse lock mechanism, reverse machining is possible. (The chuck itself does not have a built-in reverse function.) ●Tapping up to M16 is possible. ● Prevents loosening even at momentary stops from Kosoku rotation. ●The hook spanner can be used for additional tightening, improving safety. ●Mainly attaches to a drilling machine, etc., and attaches drills and taps.