Ridgid 31637 Model 151-P quick-acting tubing cutter is made with the quick-act design and I-beam construction. It has hardened wear surfaces and trust bearing slide assemblies for a more smooth operation. The Ridgid 31637 quick-acting tubing cutter includes an X-CEL knob and an X-CEL pin for quicker cutting and wheel replacement. Alsoit features fold away reamers. Model 151-P has a pipe capacity of 1/8" - 1-1/4".