Vertex M3-M8 Auto Reverse Tapping Head. Simple reversing tapping head with a 1:1 speed ratio. For use with drilling machines etc. These tapping attachments utilise closing jaws therefore no collet is required. The special clutch device permits smooth drive as well as reverse.It also has a pre-set depth control to minimise tap breakage. The cushioned drive prevents thread distortion and cross threading. Supplied on a 1/2 diameter shank. Please note: in order to use this head to the full capacity you will need to use DIN 376 reduced shank taps. Capacity : M3 - M8 Mount : 1/2 Dia Part Number K1-1/2. This item is in the category "Business, Office & Industrial\CNC, Metalworking & Manufacturing\Workholding & Toolholding\Toolholding\Adapters & Holders\Tapping Head & Holders". The seller is "fordeight_rotagrip_ltd" and is located in this country: GB. This item can be shipped worldwide.