Constant Pressure Tube Cutter 3/16" - 7/8" The constant pressure tube cutter utilizes a spring to keep consistent compression on the cutting blade to the tube.. This allows the user to through thin walled steel tubing without having to continually tighten or readjust the cutter. . Simply turn the adjustment handle until the alignment marks line up then turn the cutter to until the tubing is .. Makes the task of cutting through steel walled tubing faster and easier. . This is a professional grade cutter.. The 157 can a range of tubing sizes from 3/16 to 7/8.. Features a replaceable blade. 157 Yes -