"Only edge-forming hood available that can be adjusted horizontally to allow use with 1/4in bearing bits and for maximum dust collection efficiency Vacuum adapter for 35mm, 1-1/4in, and 1-1/2in hoses. Includes: Mounting Hardware, VAC002 -- Vacuum hose adapter. Used on Part No. Vacuum Hoses VAC005, VAC006, VAC007, VAC008, VAC020, VAC021 and Vacuum Hose Adapter VAC002. Used on Model No. Bosch 1613, 1614, 1615, 1617, 1618, 1619 series Routers. "