Fetish Fantasy Limited Edition Spider Gag Black. When wide open is not wide enough, this elegant Spider Gag will get the job done! This sturdy metal gag consists of a steel ring with four curved metal legs attached to the ring. The gag and legs prevent the mouth from closing, leaving your subject's mouth open wide for whatever you wish to put in it. The diameter of the ring measures 1.7 inches, and the gag connects to a vinyl strap that buckles in the back to keep the gag firmly in place. One size fits most. Length 23.5 inches. Inner Diameter 1.25 inches. Outer Diameter 1.75 inches. Item weight 3.5 ounces. Materials: vinyl, metal.