All the right angles! The Anal Curve Kit has 3 incremental sized butt plugs that are amazingly firm with strong suction cup bases for sturdy use. Each plug has a series of 3 graduated bulbs along the shaft. Small 3.5", medium 4.25", and large 5.5" ergonomically shaped, soft and pliable. The Anal Curve Kit is endorsed and prescribed by Dr. Joel Kaplan. These curves are kickin'!