Made of fine material, with fine quality aliminum alloy and stainless steel, has a long service life. You can adjust the angle between 0~70°, you can up to 70 angles, has a wild ran-ge of using. With the process of CNC wire cut, one tooth one angle, it is characterized by high precisions and stability. This product has the scale magnifier, so you can see the data more clearly, give you a better using experience..syi