The Bosch HDC50 BlueCollar™ SDS-plus® Universal Dust Collection Attachment provides excellent dust collection when drilling masonry with SDS-plus® hammers. It captures most drilling dust vs. standard drilling without a dust attachment. The adapter works with the SDS-plus® drill bit, up to 5/8 In. It is universal, fitting several hammer brands and all brands of SDS-plus® bits up to 5/8 In. The adapter features the Bosch Quick Connect hose-attachment system, allowing ease of movement from hole to hole. It has a compact fit in toolbox or hammer case.