M2 Inserts:https://www.amazon.de/ruthex-Gewindeeinsatz-Sortimentskasten-St%C3%BCck-Kunststoffteile/dp/B088QJG676/ref=sr_1_2_sspa?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=10N7BL9YI8ULX&keywords=ruthex%2Bm2&qid=1698925008&s=industrial&sprefix=ruthex%2Bm2%2Cindustrial%2C88&sr=1-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1
Display:https://www.amazon.de/dp/B08TMDT1CB?ref=ppx_pop_mob_ap_share
The author marked this model as their own original creation.