There are 2 adapters. One for using Bissel tools on a shark vacuum. This has a 34.5mm bore tapered to 34mm. It is a friction fir on Bissel tools.

The second adapter is for 32mm (1-¼") vacuum tools. The bore is 32mm tapered to 30.5mm.

You will need a pin and spring to install the latch. I used a 5/32" x 1" split roll pin and a 5/16" diameter x ½"  long spring.

Printed in PETG, supports not required.

The FreeCAD model file is included if you need a different size.