Makita Ultramagnetic Bit Holder is an innovative solution designed for use with high torque screwdrivers and impact wrenches. Equipped with torsion technology, which allows the torsion section of the bit holder to flex under load and relieve pressure from the bit tip for increased strength during use. The two-piece construction, made of high-strength steel, gives off the full activation of the torsion technology. A powerful magnet is housed in a removable plastic nozzle to keep metal shavings from clogging the bit holder, and the hex shank is 1/4”. Designed for heavy-duty jobs including patio construction, framing, plywood base installation and more.