Capacity ：1/4~6 5/8"(6-170mm) in various models. Models 151 - 156 features a quick-acting design, I-beam construction, hardened wear surfaces, and thrust bearing slide assemblies for smooth operation. These cutters are available in models for plastic pipe or metallic tubing. Models 151 and 152 feature fold-away reamers. Cutter Wheel : cuts copper, aluminum, plastic tubing and stainless steel tubing.