Cuts Up to 1/4 (6mm) tubing.Cuts 1.75 or 3mm filament with a strait edged or at an angle for easy feeding.Recommended usage for feeding a new filament roll. Cut the filament at an angle for easy installs with PTFE lined extruders.This also works well at opening boxes and vacuum sealed filament rolls.See the instructions.Inch IGS file included. Feel free to remix.This item makes a great gift. Just about everyone can find a use for it.