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.