MILE Shovel D Grip Handle, 32mm/1.26 inches Inner Diameter PVC Shovel D Grip Handle, Replacement Handle for Digging Raking Tool 1pcs Brand Define Test Tube Brush at Brooke Fitzroy blog Quality Material: The glass tube is carefully crafted from high quality thick glass with a strong texture, can be used for a long period of time 4 Pcs Upgraded Scientific Glass Tube 4 Pcs Glass Funnel Clear Test Tube... Smooth Surface: The inner surface of the glass tube is extremely smooth, allowing air/vapour to flow smoothly and efficiently Size Information: The test tube length 14cm/5.51inch, opening diameter 1.4cm/0.55inch, test tube brush length 15cm/5.91inch Package Includes: This set of 6 glass tubes and 1 cleaning brush is a flexible package designed to meet the diverse needs of research projects and laboratories Oil Burner Glass Pipe Pyrex 6mm 13mm 16mm Glass Test Tubes With Silk Screen Printing Surface Treatment Propagation Tubes