The product adopts high-strength carbon steel spring design, which has high strength and long service life. The product adopts butterfly-shaped fastening knob, which can easily adjust the clamping distance, rotate easily and use conveniently. The of the product is treated by plastic spraying, which has good hand feeling, difficult paint peeling and strong practicability. The products are made of Metal and are . The product clamping mouth is designed with anti-slip grooves, which is not easy to slip and has good clamping stability., Weight: 0.71870697412 Pounds, Manufacturer: NONDK