Irresistibly thick and hard, the award-winning Nexus Excel offers a stunning fit of the inner contours of your man's body, perfect for a strong and direct massage of the prostate. The smooth, durable material, combined with the perineum massager and stainless steel external handle, makes the Excel equally comfortable and easy to use. The Nexus Excel is made of polypropylene, a non-toxic plastic that is non-porous, smooth and rigid. It is 100% waterproof and can be used with water and silicone based lubricants. Shaft Length: 3.94 inches (10 cm) Shaft Circumference: 4.29 inches (1.09 cm) *Please note that Excel's shaft is quite large and therefore may not be suitable for prostate massage insertion. *Remove the stainless steel roller and replace it with the Nexus iStim attachments (sold separately) and connect it to your ElectroSex system and turn Nexus Excel into pure sexual dynamite! * We offer a 1-year warranty on all products.Experienced size made of polypropylene material Removable roller ball stimulation.