Yosoo Glass Plastic Tubing Tube Pipe Cutter Cutting Max Diameter 60mm 6cm 2.4" 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. This tubing cutter is designed to score the circumference of the tube. It will score both borosilicate and flint glass producing a very clean break. Glass tube diameter can be cut to (Approx.)6cm.Please Note that the item could not cut the glass tube totally, it coud just cut out a path, and then you shower the item with cold and hot water alternately, so the glass tube will break