3 Gates Of Hell Metal Box DJ200502. A Gates of Hell is a series of cock and shaft rings connected by a central spine. These Gates feature metal rings held together by soft firm leather. Gates of hell metal rings on leather strap. Large ring has an inner width of 2 inches, middle ring is 1.5 inches wide and small ring is 1.25 inches wide. Easy to use. Image 3 shows demonstration on Doc Johnson UR3 cock and balls sex toy. . Made using phthalate free, non-toxic materials: leather, metal. Red's Black Leather from Doc Johnson Novelties Catalog.