The package contains 10 spirit levels, size: yellow: 75 x 12.5mm, red: 75 x 12mm. HIGH QUALITY MATERIALS: Mini level pendant lights are made of special acrylic and ABS materials, which are strong, wear-resistant, not easy to deform, and durable. The molded products have a crystal appearance, fine workmanship, and high visibility. Product Features: Our mini spirit level is easy to use for quick measurements. It measures both horizontal and vertical directions. The liquid inside the spirit level is a mixture of low viscosity colored oils, allowing air bubbles to move freely for easier and more accurate handling of different angles and measurement requirements. Unique Design: This string level comes with a pre-shaped hook, allowing it to be easily attached to a construction line to confirm level accuracy. It can slide along the line. Lightweight, compact, and battery-free, it can be stored and used anytime, anywhere. Easy to use: Simply place the bubble level on the surface to be tested. If the bubble is centered, the surface is level. The further the bubble is from the center, the greater the error. Lightweight construction helps prevent rope sag from affecting measurement accuracy. Uses: The spirit level is widely used in construction, hanging pictures, building measurement, landscaping, home decoration, technical survey, and inspection. Suitable for various tasks requiring horizontal precision, it can be used to adjust frames, fences, furniture, and more.