The Makita Dust Collector Hood connects the Makita 2012NB planer to your dust collector system. The hood is engineered for quick and easy connection to a portable vacuum system. Features: Connects planer to dust collector system Engineered for quick attachment to planer 2-7/8'' OD x 2-5/8'' ID measurements for connecting to hose For use with Makita 12'' Portable Planer model 2012NBThe Makita Dust Collector Hood for the Makita Planer is designed to interface perfectly with the 12-inch portable planer. It pulls out most of the chips coming off the blade, and installs quickly and easily.