For a complete chastity device, three parts are needed: a cage, a base ring, and a lock. Unsure about size? Click here to review our size guide for KINK3D base rings. Standard Rings: 8mm thick. These work for most people. XD Rings: Extend forward by an extra 2.5mm. This tightens the ball gap, and also makes the rings more rigid. Good for people with smaller balls to prevent escape. Curved Rings: 5mm backward curve at the bottom. Can be helpful for solving pressure under the scrotum or painful squeezing of the testicles. Note: This style increases the ball gap, making it much more likely to accidentally slip out. We recommend starting with the Standard ring style, unless you already know from past experience that you need a different shape. Size inches mm 0 1 1/2 38.1 1 1 5/8 41.3 2 1 3/4 44.5 3 1 7/8 47.6 4 2 50.8 5 2 1/8 54 6 2 1/4 57.2 7 2 3/8 60.3 Compatibility KINK3D Base Rings are compatible with: all KINK3D Cobra® cages all KINK3D Viper® cages all KINK3D Shaft Rings
