Sometimes when you use a new device do you feel like you're all thumbs? For this device it's perfect! Be the injector that provides safe, precise aspiration with every filler injection! Disposable aspirator loop that fits 0.3ml & 0.5ml insulin syringes. Simply click onto plunger of syringe, insert thumb and aspirate. When finished, admire results and know you performed textbook aspiration to keep your clients safe. Pack of 50 disposable loops included, no syringes included.