"Stainless Steel, Smooth and well designed speculum is used to peek inside for examination. There is a screw in the back of this speculum that allows it to be opened to a desired level, provided that the desire is reasonable Large Collin Speculum is approximately 6 1/2"" from end to end and it opens about 4 1/4"" wide. The blades are 4 1/2"" long and 1 3/4"" wide. Medium Collin Speculum is approximately 6"" from end to end and it opens about 4 1/4"" wide. The blades are 4"" long and 1 3/8"" wide. Small Collin Speculum is approximately 5"" from end to end. and opens to about 4 1/4"" wide. The blades are 3 1/2"" long and 1 1/2"" wide. "
