Fujiko(TM) absolutely loves anal stimulation. especially with this uniquely styled 6 1/2' multi-speed stimulator. Tapered specifically for anal penetration. this probe is ultra-powerful and waterproof. making it perfect for fun in and out of water. The smooth sleek 4' tapered probe is just the right amount for anal stimulation. The largest diameter is 1 1/4'. With the ergonomic handle design. it will add dexterity to your enjoyment. This anal probe requires 2 AAA batteries. not included. Let this sleek. slender Anal Probe take you on the ride of your life!