Capacity: 2mL, Vial O.D. x Height: 17 x 61mm. Clear Borosilicate Glass. Includes attached, solid-top phenolic screw cap with PTFE-faced 14B rubber liner. GPI Thread Finish: 15-415; Screw thread glass vials with conical interior bottom for maximum retrieval of content. Designed for small-scale reactions, centrifugation, storage, and shipping.