Makita Impact XPS is new innovation in fastening with insert bits and fastening accessories built for the demands of the professional contractor. The Makita Mag Boost is a great addition to any users accessory assortment. It slides right on to make the bit more magnetic than a standard bit. The Mag Boost makes it easy for users to keep screws in position in tight quarters and long reach situations. The Makita Impact XPS Magnetic Boost is ideal for use with the 12-sided bit collar of Impact XPS Power Bits (sold separately) for added holding power. Impact XPS Power Bits are engineered for driving screws in a wide variety of demanding applications including deck building， framing， installing plywood subfloor and more.