Usage Tips:Are you looking for a professional, yet affordable glass funnel? Are you in search of funnel that can help you to finish chemistry experiment effectively? If yes, look no further! Our professional glass funnel must meet you needs. It is one of the best choices for you.Features- Color: Transparent.- Material: Glass.- Size: 18.00X10.00X10.00cm/7.07X3.93X3.93in.- Made of glass, the glass funnels have high chemical durability and low thermal expansion.- Reusable, suitale for laboratory, science experiment, liquid or powder, etc.- Our funnels are made from fine workmanship, with smooth surface for fast liquid flow.- With different sizes of the tube length, can meet your various demands for experiment.- High temperature resistance and high transparency, no liquid spill, more practical.Packing list: 4 x glass funnels