Check the listing for details. 30pcs 20x6mm Small Cylindrical Bubble Level Vials Levels Measuring Tools. Condition: New. Listed at 16.58 USD. 1. The bubble level is made of PMMA acrylic, making it durable and shatterproof. Its high transparency and clear scale allow for easy reading from all directions, ensuring long-term use.2. The bubble forms within 1 second of impact, resulting in high fluidity and clear, visible resolution on all sides. Reading is easy, and the highly visible bubble helps photographers achieve greater precision when capturing image content.3. This small bubble level is suitable for balancing and leveling equipment such as frames, heads, photo frames, murals, calendars, cameras, tripods, office desktops, computer cases, computer monitors, office machines, toys, furniture placement, woodworking measuring tools, and factory machinery, requiring high measurement accuracy. It can be used for both professional measurement layouts and general use.4.