DMM D-shaped screwgate carabiner. 25kN with a decent-sized gate opening.

Used but not much. Only used for rigging so they’ve never been scraped up a rock climb on a harness! I have a bunch of these for sale (I chose the one with the most scratches for the photos) and will do discounts for multiples. Doesn’t seem like I can set that up as I’m not a business seller but if you want more than one make a (realistic) offer.