Smooth surfaces. The PC/EL nib is a pointier nib and is ideally suited for smooth (glossy) surfaces. Nib radius: 0.35 mm. Pointier Nib (PC/EL) for glossy surfaces. Nibs exchangeable. Technology: Wacom EMR (patented). Replaces standard stylus pens (compatibility check possible via the QR code). Customizable shortcut key. More than 4096 pressure levels. Palm rejection. Wireless, battery-free operation. Matte black anodized aluminum. Metal clip. Ergonomic plastic grip. Includes 2 replacement nibs and tweezers to aid replacement.