TIANSE Binding Machine - Electric Coil Inserter for Professional Binding, 12-Sheet Punch, for Letter/A4/A5 & Plastic/Metal Coils, with 100 Coil Spines & Pliers for Home, Office, School, DIY

This is the one I got, but it's gone up in price (what hasn't?): https://www.amazon.com/dp/B08ZMZV623?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2 There are a lot of similar ones, though, and I don't think this one was particularly special. I've bound a ton of stuff with it.