Works with https://voltagevibes.com/product/matriarch-back2front/

Also (I assume) will work with any 1U Eurorack module.

Print the STL, Screw the part onto the sides with an M3 screw and nut (square or hex is fine), add VHB tape and connect.

I bought my 6" patch cables (pictured) from Amplified Parts: https://www.amplifiedparts.com/products/patch-cables-35mm-mono