The VM100 T - Bar Allen Key operated chuck allows for one handed tightening along with tremendous gripping power provided by the 4.5 to 1 ratio of the scroll. 
 
Keyed chucks cannot be beaten when it comes to holding power. The totally enclosed back assures consistent, smooth action by preventing dust and debris from getting into the scroll and moving parts of the chuck. 
 
The backing lid is also indexed for those wood turners who do not have an indexing facility on their lathes. The VM100's compact size makes it ideal for use on 300mm (12") capacity lathes or smaller.
 
Chuck type options are shown below
 
Direct Thread (screws directly to the lathe) See photo 3
Insert Type (an appropriate insert to fit your lathe is required) See photo 4
Inserts available for most threads.  Click here for the list of inserts.
 
VM100 Standard Jaws Chuck
Chuck includes: 1 x Standard Jaws, 1 x 3mm T-Bar Allen Key, 1 x 8mm T-Bar Allen Key, 1 x Woodscrew 1 x Owner's manual, 1 x 7.9mm Tommy Bar (M40 Only).
 
VM100 No Jaws Chuck
Chuck includes: 8 x Jaw screws, 1 x 3mm T-Bar Allen Key, 1 x 8mm T-Bar Allen Key, 1 x Woodscrew 1 x Owner's manual, 1 x 7.9mm Tommy Bar (M40 Only).
 
Click this link for a demonstration video