welcome to our shop! 1High hardness, acute blade, V type precise localization, smooth kerf for preventing leakage 2Portable accurate hand cutting tool, safe, efficient, fast and easy operation 3Glass cutter device, adapted to the small glass tube , circular blade, tweezers hand operation easy to use 4Smart elegant style, rear open and close design, more convenient, less effort, long service life 5This tubing cutter is designed to score the circumference of the tube. It will score both plastic and glass producing a very polished break Specification Feature: 1. In the good old days we use to score the tubing with a file, add water to reduce the surface tension, say a prayer and snap. 2. Glass cutter device, adapted to the small glass tube , circular blade, tweezers hand operation easy to use. 3. Glass cutter can be used for teaching or personal use, you need to pay attention when use avoid to cut yourself. If head are wear need to be replaced, so as not to affect the use. 4. This tubing cutter is designed to score the circumference of the tube. It will score both plastic and glass producing a very clean break. 5. Glass tube diameter can be cut to (Approx.)60mm. Package List:1cutting knife Please allow slight errors due to manual measurement and different monitors. (Customer satisfaction is our top priority. If you find any product problems after receiving the goods, such as damage or incorrect quantity, please contact us immediately. We will try our best to provide you with satisfactory after-sales service. Thank you for meeting me. I hope this helps you. wish you a happy life.