Cutter - TOOGOO(R) Cutting Tool Glass Plastic Tubing Tube Pipe Cutter Cutting Max 60mm Diameter Silver Offered here is a very handy device. 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. Glass cutter device, adapted to the small glass tube (tube diameter can be cut to about 2cm) , circular blade, tweezers hand operation easy to use. 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.