These nails are ideal for special events, costumes, any short-term occasion. Not meant for extended wear, although they will last if properly taken care of. See our nail chart for details on sizing. Material: Black Nylon 12. Packaging Removal: to remove nails from attachment cut with either a nail clipper or scissors as close to the nail as possible, then file accordingly. Application: Thin layer of nail glue (apply as directed by bottle) or thin mounting tape (recommended: Scrapbook Adhesives Power Mounting Tape 1/4") Removal: For glue, brush the perimeter with acetone and gently work beneath nail; use a pick and a gentle hand to assist removal; file residue off of fingernails and repeat for the artificial nails; For tape, gently peel off nails starting from back to front; clean off the mounting tape and residue with acetone.