The diameter graduation and insertion rod make this the most comfortable and easily inserted speculum available today. Because of its conical shape this speculum will accommodate a variety of vaginal sizes. It is inexpensive enough to be used as a disposable unit, but with proper cleaning can be used many times over. Its superior design creates optimum light refraction when used with the Garrity Light or the BIO-Light (BL-100) but can be used with a variety of light sources including the Fiber Optic Sigmoidoscope.