OEMTOOLS 27227 Mini Smart Spring Tubing Cutter Cuts Tubing With 3/16 In. to 7/8 In. (4-22 mm) Diameters Indicator Bar Shows Where to Place Various Size (Thickness) Tubes In Order to Cut Automatically Ultra-Smooth Adjusting Wheel Smart Spring, Pressure Absorbing Design Enables Longer Blade Life and Stability When Cutting Tubes that Are Not Perfectly Round