MODEL CTH 1B This is an attachment that mounts on the top of a camera tripod and allows you to fix it at any angle (up, down, left, and right) with a single-handed handle operation. It is compact and elegant, with a total length of 15cm. I do not have specialized knowledge, so please check the photos to assess the condition of the product. Instant purchase welcome. Please refrain from purchasing if you are overly concerned about details.