F.A.Q Nails How Do I Measure for Xpress Nails? Measure each finger nail at the widest point in millimeters (mm). We’ve got a video here! https://youtu.be/_kAXKGVDX9Q How Do I Apply My Xpress Nails? We’ve got a video for that here! https://youtu.be/9RLpSPCngcA