FRRK-89 VS FRRK-90 difference

FRRK-89: use allen key to lock
FRRK-90: use regular key&lock to lock

FRRK-89 chastity cage, FRRK-89 chastity cage with strap belt

FRRK-90 chastity cage

FRRK-90 chastity cage with strap belt