Vacuum Hose Cuff provides a secure connection from tools or accessories to vacuum hose. Slip-on female inlet cuff. Female outlet threads over vacuum hose. PN Inlet (Cuff) ID Outlet (Vacuum Hose) ID 1400A16 1-1/4" 1-1/4" N825 1-1/2" 1-1/4" N626 1-1/4" 1-1/2" N621 1-1/2" 1-1/2" N625 1-1/2" 2" N622 2" 2"