These two styles of hand-operated grippers are designed to pick up cryogenic vials and crimped vaccine/serum vials by the cap. These vial grippers are made to grab with precision and safely remove tubes and vials from cold temperature storage boxes. They are crafted from autoclavable, reinforced polypropylene, and feature an ergonomic squeeze area for optimal precision. These Heathrow Scientific grippers come in a pack of 2 (1 vaccine vial gripper, 1 cryogenic vial gripper) and are both colored blue.