This two-prong stainless steel speculum is intended for anal spreading. Solid and well made, this speculum is sold as a collector's piece or novelty item. Do not use them for anal spreading unless you know how to use them safely and carefully. When opened, the two prongs spread to a maximum of about 2" apart. Once the desired spread is achieved, the speculum can be locked open by turning an adjustment screw on the side of the device.