500PCS,200mm,Glass Melting Point Capillary Tube,8",ID 0.9-1.1mm,Both Open-EndCapillary tubes are open on both ends.Sealed in a bunsen burner flame.Approx 500 in tube.Length 200 mm / 8"ID 0.9-1.1 mmWall Thickness 0.1-0.15mmBorosilicate glass