1.4ml Screw Neck hplc Vials ND13 2.13-425 PP Screw caps, PTFE/silicone septa 3.Made of Clear or Amber borosilicate glass Features . 1)Crimping tools provide a reproducible, secure vial closure. 2)Manual decrimping tools allow easy removal of aluminum seals without breakage. 3)Clean room crimpers and decrimpers can be autoclaved