10 mL volume, Borosilicate glass, 20-400 threads. These are useful for micro and semi-micro scale reactions and concentration work. The vials have thick walls, conical tapered interiors and come complete with PTFE-faced silicone liners and open-hole screw caps. Vials have graduation marks. Packaged: 5-1/4 in. x 3-1/4 in. x 3-5/8 in. plastic hinged container; Weight: 657.7 g.