Civypro Extra Coarse 3 Refill Rollers - The Best Fit For Electric Callus Remover Model V-601 For Men And Women Directions: We Recommend Changing The Roller Of Your Callus Remover As Needed For Best Results. Features: Easy To Use Value For Money Easy To Install Reusable How To Replace A New Refill Rollers? 1. Be Sure The Callus Remover Is Turned Off. 2. With One Hand Hold Down The Right-Side Release Button, Then Lift The Right Side Of The Roller With The Other Hand To Remove It. 3. To Install The New Roller, Place One Side Of It Into The Groove. Confirm It'S Placed Well Into The Groove, Then Press Firmly. Do The Same For The Other Side Of The Roller Until You Hear A Clicking Sound.