Double tracks design, firm clamping, fine milling process, can clamp smaller parts, large opening, clamp wide and heavier workpieces, and more firm Double tracks: Made from cast iron that is less prone to rusting, providing a more secure grip Regularly apply lubricating oil for maintenance to smooth and flexible of the jaw It can be clamped and fixed for polishing / grinding / drilling / cutting operations Precisions milling process: Made from primary iron casting, with a smooth surfaces and the ability to clamp smaller component Maximums opening: capable of holding wide and heavier workpieces for secure use, Manufacturer: LIzogli