Does a Realistic Dildo get any more realistic than this for the money? The Realistic Dildo is available in either a 6 inch or 8 inch highly detailed cock. This really is like the real thing. The dildo has the added benefit of also being harness compatible. When you need a good sized filling then this is the Dildo for you. Each vein and crease will have you believing this is the real deal. Both Dildo´s have a diameter of 1.5 inches.