One end fits directly onto your BLACK+DECKER Mouse Details Sander to 1-7/8" Vacuum Hose, while the other end fits Ridgid brand shop vacuum hose.

Fits: BLACK+DECKER MOUSE 1.2 Amp Electric Detail Sander Model# BDEMS600

Adapts: BLACK+DECKER Mouse Detail Sander to Ridgid Shop Vacuum Hose