I used these to help stabilize the long 2020 extrusions to the 2040 extrusions on my Creality Ender 5 Plus. These can be used on any frame that incorporates the 20 series extrusions. I uploaded multiple variations depending on your preference. There are holes for securing wires with zip ties or a potential mount point for tools or fixtures. Use your imagination! The hardware list is below. I recommend using a ball-style hex key to install these.

(T-Nuts) https://smile.amazon.com/gp/product/B07VHNGBWJ/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&th=1

(Washers) https://smile.amazon.com/gp/product/B015A39UDY/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1

(Screws) https://smile.amazon.com/gp/product/B07NVHPPBC/ref=ppx_yo_dt_b_asin_title_o04_s01?ie=UTF8&th=1