Two Neck Boiling Flask Product categories Laboratory Glassware Electronic Balance Electronic Meter Portable Burner Models Medical Equipment Thermometer Microscopes Laboratory Plasticware Stopwatch Gas Installation Flat Bottomed Flask CHARACTERISTICRound Bottom Flask2 Angled Neck24/40 Center Joint in the central and sideMade of borosilicate glass Inquiry now Contact Us Product Details Star Labs 1000ml Glass 2 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint – 1L (1 Liter) Specification