Based on this product's specifications, here are some alternatives and similar models
Pumice stone Donegal PUMEKS ósemka (1084) – brand Donegal, model 271084
Summary description:
Donegal PUMEKS ósemka (1084) is a pumice stone for personal care and pedicure use. Manufactured by Donegal (model 271084), it serves to remove rough, callused skin and to smooth heels and soles. Compact and manual, it is intended for home or salon foot care routines as a mechanical exfoliant for hard skin.