Kit contains three rings. #14, #15, and #16. Perfect Fit has developed the first cock ring sizing system designed to fit you without too much pull but with enough restriction to be truly effective. Features: Ring Number 14: 1.4 inches in diameter, 4.4 inches circumference Ring Number 15: 1.5 inches diameter, 4.7 circumference Ring Number 16: 1.6 inches in diameter, 5 inches circumference