Specification: Product: Bow Tuning and Mounting String Level Combo Kit Material: Impact Resistant Material Package includes: 1 x Bow Tuning and Mounting String Level Combo Kit Rugged, highly durable and environmentally safe, portable and easy to carry, mini lightweight, easy to carry and store, and long service life. Easy to use, just hang it on the rope or arrow until it is horizontal, check whether there are bubbles between the lines, and check whether there are arrow tails and sights at the vertical and horizontal positions of the bow. Small and light, easy to carry and store, just put it in the archery bag, don't worry about occupying space. It is suitable for archers. A bow level is a useful tool for archers.