Specially designed to be used on dry feet. Refillable roller head spins 360 degrees for quick results. Buff away hard skin in minutes for beautifully smooth feet. Gently and effectively buffs away rough, dry, hard and calloused skin in seconds. Specially designed replaceable head with long lasting micro-abrasive particle for continuous filing results. Safe and more effective than metal scrapers and easier than a pumice stone for removal of hard skin from your feet at home. Type: Replacement Roller Head Quantity: 4Pcs Material: Abrazine Features: Coarse, Easy to Use, Refillable Length: 5.8cm/2.28", Width: 1.7cm/0.67" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 3 x 4 x Replacement Roller Heads