Ultimate Anal Kit Black comes with 7 unique items. Two cock ring sizes to keep you harder longer. Five butt plug variations. Prostate stimulation. Anal training kit, perfect for beginners. Sizes cock ring diameters 1.7 inches and 1.6 inches, Butt plug insertion lengths 3 inches and 3.5 inches, total length 3.9 inches 2 at and 4.1 inches. Body safe phthalate free material 100% Silicone.