This listing is for a Sub style ceramic bezel insert in black with a yellow triangle. It has a lumed pip and fits the Seiko SKX007 family of divers as well as the new Seiko 5 Sports SRPD or "5KX" models. You can get it with or without a 3M adhesive ring.
The insert is sloped which works best with domed crystals. We have one that is specifically designed to fit with these types of inserts.