1.for rolling tube with same outer diameter,there are so many different inner structures in different countries.we can only offer you crown and drive adapter from original package of A-OK for different tubes as below. Please check first.

For the crown and drive adapter, sometimes you need to modify and make them work with your tube.
Some buyers can make crown and drive adapter with 3D printer,very good and nice,it is a good choice.
Or you need to find crown and drive adapter in your local market and get them.
If your old crown and drive adapter on your tube still work well, it is a better choice.

Below Crown and Drive Adapter is for 40mm Round Tube:

Below Crown and Drive Adapter is for 40mm Octagonal Tube:

Below Crown and Drive Adapter is for 45mm Groove Tube:

Below Crown and Drive Adapter is for 47mm Groove Tube:

Below Crown and Drive Adapter is for 50mm Groove Tube or 50mm Round Tube

Warm Notice

After order, please make sure phone number,address on Aliexpress is correct.
Keep your phone through all the time please.

3)Monitor tracking information on Aliexpress very often,it is very important!

Your package may be destroyed by the shipping company if they can't call you successfully or no one picks up the parcel in the deadline. Then it will be a big loss for you. You know it is out of our control. Thank you!

Item Features

with tuya app wifi control and RF433 remote control
Electronic limitssetting by remote,easy for installation
Multiple limits preset,besides end limits,4 more middle limits for optional
Keep the limits when the power off
Self-checking and correcting of brake offset
Stop on block for security
Famous quality components to ensure reliable performance

This A-OK AM35-10/17-MEL-PW can work with 40/45/47/50 rolling tube as the picture show

You need to order the matched brackets here

Brackets and Tail Plug for 45/50/55mm Grooved Tube

Brackets and Tail Plug for 47mm Grooved Tube

User Manual for Motor