These surgical tools come in various blade widths from 1 inch up to 3 inches, with handle lengths available in 9, 12, or 13-inch options to match different surgical depths. Popular sizes include the 1" x 9" for shallow procedures, 1½" x 12" for general abdominal work, and 3" x 12" for deep cavity access. Surgeons pick the right combination based on whether they're operating on children or adults and how deep they need to reach inside the body.