The US30 is a unit manufactured by Protem. It is a beveling machine or cutting machine that is contour that covers the range from 1 inch to 4 inches. It has a standard tool plate that accepts the multiple tool bits. It permits the four simultaneous machining operations. The unit has a machining capacity of 0 mm ID – 114,3 mm OD1” ID – 4” OD while its clamping capacity is 30 mm ID – 114* mm ID (1” ID – 4” OD.