The Seltzer speculum is a precision instrument used for examining cavity. It features a 14.00mm blade size, 1mm blade width, and 0.5mm black thickness, making it an ideal choice for detailed examination of the oral cavity. The total length of the speculum is 83mm, providing ample reach and visibility for the examiner. With its high-quality construction and precise engineering, the Seltzer speculum is a reliable and durable tool for any dental practice.