The House Suction 4 1/8" L with Obturator, 18ga is a specialized surgical instrument designed for otologic procedures. This suction device features a length of 4 1/8 inches and is equipped with an obturator, which helps guide the suction tube during insertion and ensures precise placement. The 18-gauge designation refers to the diameter of the suction tube, which is medium-sized, offering a balance between suction capacity and precision.