Size20mm--水口夹采用超硬铝材料，重量轻，强度高，刚性强，使用寿命长
D型夹头是的水口夹和产品获得更好的接触和大开口夹持
Size20mm -- the sprue gripper is made of superhard aluminum, with light weight, high strength, strong rigidity and long operation life
The D-Type-Tooth jaws have better contacting surface and more clamping force with bigger opening size
