Aqua Silk Vibrating Bullet. The Aqua Silks Bullet is fully waterproof and is covered with the ultra-smooth, silky coated Soft Touch material that makes this egg so popular. It also has a 30 inch cord for remote fun and has 4 wonderful speeds. A very fine bullet indeed.Length: 2.5 InchesDiameter: 1 InchCircumference: 3.