Features: 1. Specially designed diamond crystal roller head: It has long-lasting micro-abrasive grain and can be continuously filled. 2. Carefully grind off the hard skin in a few minutes: give you super smooth feet 3. Ergonomic shape: safe and professional removal of hard skin from the feet of the home Descriptions: 1. Simply slide on the hard skin for a few minutes to instantly remove dead skin and create a stylish look. 2. Each roller can be used about 12 times. Take the hard-boiler machine once a week, for example, you need to change the wheel in about three months. Specifications: Material: grinding head Foot stone shape: oval Colour: Black Package Included: 2 * Foot grinding sand Notes: 1. Due to differences between different displays, the picture may not reflect the actual color of the item. 2. Physical errors may exist due to different personal measurement techniques. Thank you! The Most Execellent Replacement: 4Pcs Regular coarse foot file refills replacement for daily maintenance, possess suitable inventory to ensure you always have a fresh refill ready, retrieve your beautiful feet/hand in no time. Prominent durability Features: Curvature of the design, fully fit the skin surface, such as corn type skin, callus skin remover, improve work efficiency.2 times more hard white fused alumina abrasive particles compare to other brands. Redesigned washable device to perfectly fit electronic/ electric pedicure foot file and many other brands. Make it removing dead skin more efficient, and ultra durable than ever. 360 Degrees Rotation And DIY At Home: Refillable roller head spins 360 degrees for quick results on thick, calloused skin Safe and effective to remove dead skin from feet for the perfect pedicure at home. All-Round 24H Sale Service: The professional material insure the quality of item. Please contact our Happy Shopping Service or send email to our company's mailbox, we will give you a satisfied solution in 24 hours. Item Name: Regular Coarse Foot File Refills Replacement; Main Material: ABS Plastic+ white fused alumina; Mian Color: Black, Blue; Total Size: 2 x 5.7cm / 0.79" x 2.24"(D * L); Mounting Axel Size(Auadrangle): 4 x 4mm / 0.16" x 0.16"(Length Of Side * D); Weight: 66g / 2.33oz; Package Include: 4 x Regular Coarse Foot File Refills Replacement.