DescriptionMade of sturdy and premium zinc alloy material for practical use, this glass tube cutter is specially designded for cutting the glss tubes or pipes. It 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.Features-Color: Silver-Material: Zinc Alloy -Size: Approx. 7.20X7.00X2.00cm / 2.83X2.75X0.79in - Made of quality zinc alloy material, safe and durable for use, long serving life.- You can just dial and adjust. Simply insert the tube into the cutter and rotate the tube to mark a precise mark, then press the tube along the scoring mark.- With ergonomic design, cutting the glass tube is very easy and effortless.- Easy to operate, suitable for personal or professional use. - Light weight and compact size, easy to carry and store.