What is the diameter of the Pulex End Cone accessory which fits into the extension pole and which lamb wool washer or squeegee fits onto it? Thank you.

Hello,
I think you might be looking for this, which is the pole tip:
https://windowcleaner.com/products/pulex-pole-tip

This pole tip will fit onto almost any Pulex extension pole.

Here is a lamb's wool duster that can work:

https://windowcleaner.com/products/unger-lambs-wool-duster