Train that hole! These ass grommets will keep it spread wide open, leaving the insides exposed for penetration, liquid play, or just an innocent peek inside! Two are included so that you can start with the smaller grommet and work your way to the larger. The firm, yet flexible material keeps the opening of the hole pried open for an enjoyable stretching sensation. This unique training set is ideal for advanced anal enthusiasts. Made of premium silicone, they are non-porous and phthalate-free. Clean after use with mild soap or toy-cleaner and avoid use with silicone lubricants.Dimensions: Small grommet: 1.6 inches in length, 1.38 inches inner hole diameter, 1.95 inches outer diameter of hole, 2.4 inches inner flare, 2.7 inches outer flare.Large grommet: 1.6 inches in length, 1.76 inches inner hole diameter, 2.35 inches outer diameter of hole, 2.8 inches inner flare, 3.1 inches outer flare.