The BL 200 Series with Adaptor chucks have been designed with a lever style mechanism. Rather than the standard wedge to allow for increased jaw stroke.
The increased jaw stroke allows for larger diameters to pass by the jaws then holding on a sma...
These knurled adjusting screws can be used to replace standard hex bolts and cap screws and eliminate the need for tools. They can be combined with knurled nuts to create tool free adjustable workstops and jacks for fast fixture adjustment.