Versatile, handling injections from 15-2500 PSI. Measuring nearly 3 inches and requiring A 3 inch drill hole, its longer design makes the injection process easier. The four large ridges near the top help keep the injector head slightly above the concrete. The protruding head design prevents the injector from sinking too deep into the drill hole, allowing for easy access to the injector head even when trolling at a 45° angle. The smaller drill hole size is less invasive, helping preserve the structure. The ribbed body helps maintain a solid hold on the concrete, allowing higher injection pressures. Save Time: The head molded directly onto the injector allows for quick and easy installation on work sites. Improve Efficiency: With the internal return valve, the opening pressure is only 15 PSI. Injectors will remain perfectly sealed up to 2500 PSI.