Simcro™ Sekurus™ Injector Syringe, 4-Stop, 2 mL The Sekurus self-tenting injector has a radically different design that provides greater safety and accuracy, saving you both money and time. It has a protective needle guard that reduces the potential for self (human) injection, as well as a patented two-stage safety mechanism that ensures that the pharmaceutical will not be administered until the needle reaches maximum penetration depth. This design also reduces bruising at the injection site, lowering animal stress and discomfort. The Sekurus allows the user to perform one-handed subcutaneous injections, which is safer for the operator and less invasive for the animal.