The callus remover for feet comes with 3 different roller heads: Fine roller head: Suitable for daily maintenance and delicate foot skincare. Regular roller head: Suitable for newly formed calluses and normal foot care. Coarse roller head: Suitable for rough, cracked, stubborn dead skin, foot callus, corn, tick toe. Powerful 2 speeds: Press the switch button to switch between 2 speeds and switch the item on and off. The callus remover for feet comes with 3 different roller heads: Fine roller head: Suitable for daily maintenance and delicate foot skincare. Regular roller head: Suitable for newly formed calluses and normal foot care. Coarse roller head: Suitable for rough, cracked, stubborn dead skin, foot callus, corn, tick toe. Powerful 2 speeds: Press the switch button to switch between 2 speeds and switch the item on and off. 13 in 1 Professional Foot Care Kit Meet Your Different Needs 1 x Foot Pedicure Machine 3 x Different Grinding Heads 1 x Nail Brush, 1 x Roller Cleaning Brush 1 x USB Cable 1 x V-Shaped Push Stick 1 x Foot File 1 x Callus Shaver 1 x Nail File 1 x Double-sided Frosted File 1 x Cuticle Remover Dead Skin Remover for Feet - Powerful & Durable Low Speed: 1900x/min High Speed: 2200x/min Service Time: about 2h Charge Time: about 2h LCD Battery Capacity: 1200mAh Power: 5W Charging Voltage: 5V (USB) Please charge for about 2 hours before using it for the first time. Minors need to use it under the guidance of adults. Only suitable for skin on the heel, do not use the device anywhere else on the body. Do not stay on the same part for more than 5 seconds when using. When the motor overheats or the roller head is stuck by yarn or hair, etc., the device will shut down automatically. How to replace the roller head? Turn off the foot file, then press the grinding head switch key. Press the button without loosening and gently pull out the roller. Press the button without loosening, place the new roller in the aligned position, and release the button. How to take better care of your feet? Clean your feet, and soak them in warm water for about 10 minutes. Dry your feet with a cloth. Choose a roller according to your foot skin condition. When you grinding feet, please don't stay in one area for more than 5 seconds. After removing the callus, you will need to wash your feet again. Then apply foot cream for better results. No more hiding in closed shoes or being embarrassed by calloused feet; Boost your confidence and radiance!