Test the Structure 2.0 - 20 CT nail tips for perfect nails. use these nail tips for a perfect smile line, every time! It has a curved C curve and a bow for long lasting and beautiful roses and whites. Easy application for a complete and natural look. Made in the United States Benefits: Lines of instant smiles Not-well tip is applied quickly for perfect smile lines. Crunchy white for stunning pink and white nails. Curved C curve and arc Elegant free edge resistance.