The Bosch HDC100 SDS-plus® Dust-Collection Attachment provides excellent dust collection when drilling with Bosch hammers. This attachment fits most new Bosch SDS-plus® hammers, coupling via a unique side-handle interface. The attachment has a metal telescoping arm for precise retraction and can accommodate up to a 4-3/4-In. drilling depth, and it can be adjusted forward or back with a clamping band to accommodate a variety of bit lengths. The dust port can be hooked up to a 1-3/8-In. vacuum hose nozzle, or it can accommodate 1-1/4-In. or 2-In. nozzles when combined with an appropriate optional adapter.