three or four movable aspiration hooks guarantee ideal aspiration these syringes meet the most discerning requirements with regard to design and handling suitable for all commercially available dental cartridges with solid plug user-friendly thanks to proven design finger plates and thumb ring are completely rotatable for highest user comfort and flexibility front part permanently attached bending mechanism for effortless insertion of the dental cartridges (breech loading) secure handling and easy cleaning autoclavable at 134 °C or 273 °F