channel will do other vacuum hose reducer connectors Cheetah Huddle Incubus
Dust Hose Connector Ports - 32mm - Pack of 4
Grevosea 3 Pieces Vacuum Hose Adapter, Universal Vacuum Adapter Connector Kit 2-1/2 Inch to 1-1/4 Inch, 1-1/4 Inch to 1-3/8 Inch to 1-1/2 Inch, 1-3/8 ...