Dentapen Anesthetic Injector - Kit: 1 Electronic Syringe, 7 Cartridge Holders, 5 Syringe-style & 2 Pen-style Finger Grips, 3 Universal Batteries, 25 Disposable Protective Sleeves. Ergonomic and lightweight (1.4oz / 40g). Compatible with the needle of your choice. Two different handles allow you to hold like a traditional syringe or pen-style. 3 injection speeds for better management of your injections. 2 modes (continuous flow or gradual increase). Anesthesia Delivery System. Cordless. Painless. Handheld delivery system