You can get the FYSETC Portable Input Shaper here:
Aliexpress: https://www.aliexpress.com/item/1005004555226273.html?spm=a2g0o.productlist.0.0.3f4347dcv3uRnT&algo_pvid=dfb295df-a4a0-46f4-b2ca-f69f31231535&algo_exp_id=dfb295df-a4a0-46f4-b2ca-f69f31231535-0&pdp_ext_f=%7B%22sku_id%22%3A%2212000029604437979%22%7D&pdp_npi=2%40dis%21USD%2122.11%2117.69%21%21%21%21%21%402100bddd16675841245711078e4af3%2112000029604437979%21sea&curPageLogUid=y6FdDWNxmiLv
Amazon: https://www.amazon.de/BCZAMD-Verbessertes-unterst%C3%BCtzt-Afterburner-Stealthburner/dp/B0BFWZYW1X/ref=sr_1_2?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=2R2ZNEGFOJV3P&keywords=fysetc+input+shaper&qid=1667584814&sprefix=fysetc+input+shaper%2Caps%2C87&sr=8-2
Screws:
The author remixed this model.