what is the best callus remover

{"cid":"91220130","title":"USB Rechargeable Foot Electric Washable Callus Remover Pedicure Foot File Machine","imgUrl":"https:\/\/img.chinax.com\/nimg\/5c\/4c\/624e0baa66e9f78ce5c5e092ce82-200x200-1.jpg","attrs":{"Price":"$1.00 - $5.50\/pieces","Brand Name":"Anbolife, Anbolife","Model Number":"AF28","Minimum Order Quantity":"2000 pieces","Place of Origin":"Zhejiang, China","Packaging Details":"Gift box, double blister , window box , PVC box ,
Anbo Foot Electric Nail File Foot care Callus Remover Pedicure foot file Machine Heel cuticles remover Washable Rechargeable","Supply Ability":"450000 Piece\/Pieces per Month callus remover","Type":"Callus Trimmer","Item name":"Callus Remover","Power Supply":"USB Rechargable, Battery","Accessories":"Travel pouch","Port":"Ningbo"}}