OPI Crystal File
OPI’s Crystal File features uniquely hardened glass with a gentle abrasive surface that is permanently etched into the glass. The ultra fine-textured grit is ideal for natural nails, and won’t promote chipping and peeling like other files can. And the 100% nonporous glass can be sanitized and disinfected between services for use on all your natural nail. For best results, dampen the Crystal File before use and store it in the protective tube
Price: $18 with protective tube