What is the opinion of Reddit about the
Costar Style Plate-Mounted Costar Stabilizers Balancing Pole Raised Wire 6.25u 2u for MX Mechanical Keyboard Filco (Kit 2 for 96 104 Keyboard)?

Probs costar like this: Costar Style Plate-Mounted Costar Stabilizers Balancing Pole Raised Wire 6.25u 2u for MX Mechanical Keyboard Filco (Kit 2 for 96 104 Keyboard) https://www.amazon.com/dp/B07K8FFDYJ/ref=cm_sw_r_cp_api_fabt1_ROxUFbPPR8DPR?_encoding=UTF8&psc=1

Those are what I used for my 3D printed board with same size holes

Costar stabs are characterised by being thin lol https://www.amazon.com/Plate-Mounted-Stabilizers-Balancing-Mechanical-Keyboard/dp/B07K8FFDYJ they are different from other plate mount stabs in that way; they aren’t compatible with each other. If the board supports costar then you would have to buy that style. Cherry style are wider and clip onto the plate differently. Cherry style also comes in PCB mount.

Those are the key inserts for Costar stabilizers.

The ones I linked are black but you can buy them in white too. The keys you’ve linked in your photo are 2u so you need a few 2u stabilizers. You may need one for your spacebar too if you don’t already have one.

Also if you aren’t able to get the little piece out you can buy them on Amazon and put them in the keycap instead.

Das Keyboard uses costar stabilizers. Can think of two options for you:

1. Purchase costar stabs from Amazon, Aliexpress etc
2. Purchase a Razer PBT Keycap Upgrade set. It’s a full-size layout of keycaps and includes replacement costar stabs which you can use

If you’re using the stock Das Keyboard ABS keycaps, I would recommend picking up the Razer ones. The quality is really good for the price!