This is a Canon EF 50mm f/1.8 STM lens. It's a 50mm lens with a stepping motor, providing quiet focusing. I used to own the f/1.4 version, so I only bought this one as a backup and haven't used it at all. Included accessories are the hood and front/rear lens caps. There is no mold on the lens, and no noticeable dust. It works perfectly fine, as confirmed by testing. While I don't see any noticeable dust, some people might perceive some dust particles, so please refrain from purchasing if you are overly sensitive. In my personal opinion, it's in excellent condition. This is a bargain price, so please refrain from negotiating the price.