I believe it was this one. There’s a couple Amazon vendors that make the exact same one.

VEVOR G920 Racing Steering Wheel Stand Shifter Mount fit for Logitech G27 G25 G29 Gaming Wheel Stand Wheel Pedals NOT Included Racing Wheel Stand https://www.amazon.com/dp/B077PZKNDH/ref=cm_sw_r_cp_api_glt_i_VQHW6YMFP9DH1Y93W4C6?_encoding=UTF8&psc=1

I got a cheaper stand from Vevor: https://www.amazon.com/gp/product/B077PZKNDH/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1 from Amazon, it does the trick, but now that I am getting into it more, I think I want to get something that is a little more sturdy. I've been looking at this Next Level Racing stand: https://www.amazon.com/gp/product/B09KZRRJ9Y/ref=ox_sc_saved_title_2?smid=&psc=1 as it allows for a racing seat add-on. I have heard good things about the Next Level Racing one and the Vevor got decent ratings, but just a little flimsy.