1. Low carbon thickened alloy steel, integral forging structure without welding, light weight, high safety factor, wide range of uses. 2. The overall paint, full color, after heat treatment, anti‑rust surface, beautiful gloss and durable, mild light transmission, high temperature paint. 3. Integrated casting process, the integrated casting process of the clamp body is strong and durable, and the material is heavy. 4. Fits seamlessly, non‑slip, save effort and safety, 180° reversible, humanized, easy to use. 5. Spring equipment is used for tight locking, which can keep that the plate slides.