Irresistibly thick and hard the award winning Nexus Excel provides a breathtaking fit to the inner contours of a man's body perfect for giving a strong massage straight to the prostate. The smooth durable material combined with the stainless steel roller perineum massager and external handle makes the Excel equally enjoyable as it is easy to use. The Nexus Excel is made from polypropylene a non toxic plastic that is non porous smooth and rigid. It is 100% waterproof and can be used with water and silicone lubricants. Shaft length: 10cm (3.94ins) Shaft circumference: 1.09cm (4.29ins) Please be aware that the shaft of Excel is quite large and therefore may not be suitable as an introduction to prostate massage Includes 1 year warranty.