Profile: Strata Tech, Inc. specializes in grouting supplies and equipment. Our product line includes injectors & ports, grout pumps, and manchette tubes. Our progressive screw injectors are shaped like a threaded cone and work with a gasketing sleeve. The sleeve fills irregularities or rough spots in the concrete. The user pushes the sleeve and the tip of the injector into the drill hole until they stop with a light tap of the wrench. The sleeve fits into the concrete and sticks snugly. Then the injector can be wrenched or ratcheted through the sleeve to the desired tightness. Our compressed rubber injectors lock within the drill hole by mechanically compressing a rubber cylinder around a hollow threaded shaft. These injectors are available with different shaft lengths, allowing for the injector to seat at varying depths below the surface. This design makes these Resi-Mizers particularly effective in "punky" concrete, in layered surfaces like Gunite and Shotcrete, or surfaces which have been weakened by chemical attack. The applicator may choose from several diameters and lengths in options.