Features and Benefits: * Cuts tubing from 3/16 to 7/8 * Spring tension keeps tubing pressed agains blade * Tighten tool 1 time no need to retighten as you cut * No slip handle * Replaceable blade This tube cutter features a spring loaded tensioner to allow the cutter to cut through tubing without adjusting the tightening wheel. Other testers function on the turn-tighten-turn method to cut tubing. On this version, you simply attach to the tubing, tighten knob to proper setting: turn the tool to cut the tubing.