[DETAIL] Introduction 2 Different Quartz Sand Roller Heads Coarse Roller:Suitable for hard calluses and dead skin Fine Roller:Suitable for hands or more delicate skin care. Head removal method 1. First insert one end of the head picker into the gninding head 2.Clamp the other end into the grinding head 3. Split one end upwards and take out the grinding head Head installation method 1. Align the grinding head with the head slot. 2. Press down into the grinding head. 3. Check ifitis fim. [ATTRIBUTES] - High-concerned chemical: None - position: A Pair - Power Source: None Electric - High-concerned chemical: None - position: A Pair - Power Source: None Electric - Material: BAS - Type: Hand Foot File - Number of Pieces: Combo - Origin: Mainland China - Item Type: Foot Care Tool - Item Type: Foot Care Tool