4-1/2", x-lock, angle grinder with x-lock wheel change, x-lock mount offers a reliable wheel change interface, up to 5x faster than conventional interfaces, pull of a lever to release wheels, ergonomic slim grip zone, powerful motor 10a & 11,000 rpm, epoxy coated field windings extend motor lifetime & preventing dust & debris, service minder brushess eliminates guesswork, stopping grinder when preventative maintenance is required, includes auxiliary handle & wheel guard.