Flat-X Square Nail Tips: Tired of nail tips that lift and don't fit properly? flat-X nail tips square shape feature a gentle arc that lays flush with your natural nail. This design ensures even pressure distribution for a secure fit with no lifting, just comfort. Perfect for flat and natural nail beds 16 Sizes Pre-numbered Nail Tips: Never worry about a bad fit. upgraded nail tips medium come in 16 sizes with the numbers"00-14"to quickly find your size. The extended width range ensures a customized fit for diverse nail shapes, offering superior comfort and hold without over-trimming Long Lasting 28 days+: Upgraded pre-etched flat fake nail tips eliminate the need for shaping and filing, reducing polishing time and increasing the contact area between glue and tips for improved adhesion. The thin back edge seamlessly adheres to your natural nail, extending your nails in just 3 minutes and showing them off for over 4 weeks Beginner-friendly Design: Featuring a golden ratio of apex and anti-overflow glue structure, engineered for strength and a clean application. This design prevents breakage and controls glue overflow, making it easy for anyone-from beginners to professionals-to achieve a salon-quality finish. (Warm reminder: this set does not include nail glue) Premium Etch-X Nail Extensions: full-coverage square soft gel nail tips are made of soft, breathable, and durable PMMA. They are low-odor and easy to apply, gentle on your natural nails. The pre-shaped design allows for quick extensions and DIY nail art fun at home