Magswitch on/off magnetic workholding square with 150lbs/67kg holding capacity. For use in welding, woodworking or anywhere steel is used. Our MagSquares, with strong magnetic hold on 3 sides, provides a new level of fast and easy multi-plane workholding for positioning steel. Magswitch MagSquares exert a powerful magnetic field with a simple 180-degree rotation of the knob. Get a 90 degree angle with a simple turn of a knob. And check out all the other uses - level sheet, support, stop, guide, mounting base - the uses are endless. A must for every fabricator and welder. Featuring the patented Magswitch® technology for complete on/off control, super strong , precise positioning. Holes on all sides for mounting and fixturing. Holds flat and round steel.