Strict manufacturing standards, professional manufacturing technology, complex and sophisticated production process, to create high-quality products with high cost performance. Carefully select raw materials to ensure that every step of the product production process reaches an excellent level. Products: new, industrial quality, high quality, durable. Very high practicability: the product has clear installation technology, easy operation, and is a powerful helper in your life. It has a wide audience. It is a powerful instrument for businessmen, engineers, farmers, contractors, construction workers, maintenance workers and other personnel. It is a practical tool for all families and factory workshops. Colour: Picture color Material: Plastic, metal Package Contents: 330 * Desktop chassis mounting screw assembly 1 * Tie 1 * Screw driver 1 * Cleaning brush set Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.