Base Rings for Chastity Cage (With Ears & Hook) – Fits Internal Side Slide Lock System Only (K03 / K04 / K04A)

These base rings are designed exclusively for chastity cages with an internal side slide lock system . Not compatible with hex key lock systems. The K03 round ring features two integrated support ears, designed to improve stability and comfort during wear—especially when used with a belt. The K04 curved ring includes two support ears and an additional hook, offering enhanced stability and extra support. The K04A curved ring features two support ears without a hook, providing a more minimal and comfortable wearing experience while maintaining stability. • PLEASE NOTE Please confirm that your chastity cage model is compatible with these base rings before purchasing. K03 : Round Ring with 2 Ears K04 : Curved Ring with 2 Ears + 1 Hook K04A : Curved Ring with 2 Ears (No Hook) Choose the model that best fits your needs and wearing preference. • SPECIFICATIONS Model: K03 – Round Ring (2 Ears) Model: K04 – Curved Ring (2 Ears + Hook) Model: K04A – Curved Ring (2 Ears) Material: 304 Stainless Steel Available Sizes: 4.0 cm / 40 mm – S 4.5 cm / 45 mm – M 5.0 cm / 50 mm – L 5.5 cm / 55 mm – XL • QUESTIONS & ANSWERS Q: How do I check the model of my chastity cage? A: We usually list the compatible ring model in the [SPECIFICATIONS] section of the product page. You can also find the model number at the end of the product title. For example: Model: LKM-023 LKM-023 is the model of your chastity cage. Q: I’m not sure which base rings fit my cage. What should I do? A: We list the compatible ring models on each product page. For example: Model LKM-023 is compatible with K01, K02, K03, K04 base rings. If you are unsure or choose the wrong size, you can always purchase a replacement base ring separately.