Smooth and Sensitive: The iPad pencil tip is made of high-quality material which is durable and wear-resistant, smooth enough to protect your iPad screen from scratch and smudge.  Works the same as original apple pencil nibs, sensitive to different pressure. Easily control the line weight, tilt to draw, paint to shade. Compatible with:  Apple Pencil 1st Generation iPad Air (3rd generation) iPad mini (5th generation) iPad (6th and 7th generation) iPad Pro 12.9-inch (1st and 2nd generation) iPad Pro 10.5-inch iPad Pro 9.7-inch * Apple Pencil 2nd Generation iPad Pro 12.9-inch (3rd and 4th generation) iPad Pro 11-inch (1st and 2nd generation) Installation Guide: 1. Prepare a new pencil tip! Unscrew the old tip.  2. Remove your old pencil tip from Apple Pencil.  3. Place the new tip replacement on the Pencil and screw it until feels secure.  Important Note: DO NOT over-tighten during installation.