Made of plastic and liquid material, durable, easy to use and accurate. Small size, portable and easy to use. Surface scale design make it become an practical tool, let you know the horizontal information correctly. No battery or power require, easy and safe to use.Features Color: Green. Material: Plastic. Size: About 1.2x1.2x0.5cm/0.47x0.47x0.19 inch. Made of material, wearable and accurate, convenient to use. Available for all high accuracy requirement areas, makes adjusting more convenient and accurate. Stable performance over a wide temperature range and excellent resistant. Designed to level surfaces in all directions. The horizontal direction is clear .Package list: 16 x Universal Level