Compatible inlets will be 1-7/16 inch to 1-1/2 inches in diameter

Electric Hose Handle End Compatibility. Connecting your accessories and wand.Central Vacuum Electric Hose Handle End
The handle end of the replacement electric hose has a three-way switch,  The two-pin electrical connection is flush on the front of the handle under the metal stub tube. The round stub tube that slides into the wands has a button lock nipple two inches away from the handle end.

For Use With pigtail units 6 ft wire
New  Ergonomic Gas-pump Style Handle  
360-Swivel for Fewer Kinks
Strain Relief Helps Maintain Consistent Airflow by Preventing Kinks at the Handle 
Crushproof, Pliable Hose Protects Home
Lightweight, Easy to Use & Store
110-volts to Electric Power Head
3-way Switch Controls Suction & Power Head
Position O - Turns off the central vacuum unit and power head
Position I - Turns on the central vacuum
Position II - Turns on the central vacuum unit and power head
1 3/8" Inside Diameter.  That's 27% More Air Flow than 1 1/4" Inside Diameter Hoses.
Air Flow Adjustability
3-Year Warranty