I've used these files for over 30 yrs never leave color on ur product or nail. Last a good long time . Better than another file I've tried over the years. Once used a bit its flexible so u can get easily beside the bail plate and cuticle without cutting cuticle. I always take 2 and rub together when brand new just to get the very sharp bite off so
...Read MoreRead more about I've used these files for over 30 yrs it wont cut into my finger. Washable time after time. Great product with a lot of years on the market. Read LessRead less about I've used these files for over 30 yrs