The HDC100 SDS-plus 3/4" Dust Collection Attachment provides excellent dust collection when drilling with rotary hammers. This attachment fits most 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" 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" vacuum hose nozzle or it can accommodate 1 1/4" or 2" nozzles when combined with an appropriate optional adapter.