Whether you already own a 300 series vise or are selecting components to build your own custom work holding system, our Base Mounts will add an extra dimension of productivity to your next project! Compatible with the 201 PV Jr, 300 Standard Base and 305 Low-Profile Base. All Base Mounts have three holes designed for 1/4-20 screws evenly spaced on a 4 5/16" (109.5mm) bolt circle. All our vises and work holding devices come with a "lifetime warranty."
* Magnetically attaches to any flat, ferrous metal surface.
* Perfect for keeping work holding tools on machinery, truck beds, tool boxes, file cabinets...anyplace magnets are not a problem.
* Magnet slightly recessed to avoid scratching or marring metal objects.
* The Magnet Base Mount is 1/4" (6.3mm) thick.
* Magnetic power holds 5 lbs (2.3kgs) at 90°.
* Three 1/4 -20 screws for mounting Bases are included.