Features for 12001   • Retractable syringe with self locking mechanism to prevent needle stick injuries • Prevents reuse after activation of locking mechanism and cannot be deactivated and remains protective through out disposal • Single hand use allowing the worker’s hand to remain behind the needle   1. To use, press the plunger with the thumb until a click is heard / felt. Verify luer lock needle is firmly engaged and then remove needle cover prior to releasing thumb pressure. 2. Aspirate, fill and inject as usual 3. If syringe is emptied, continue pressing plunger with thumb until a click is heard / felt. Even if partial drug remains in syringe press QUICK TAB towards needle with thumb until the click is heard / felt. In either case allow syringe and needle to fully retract by releasing thumb pressure. Retraction speed is controlled by end user • Allows for simple needle interchange • Sizes : 3 ml. • Needle sizes : 18G to 25G.