The Pilot G-Tec C4 Rollerball is a rollerball pen with extra fine nib and black pure gel ink.Using newly developed bio polymer ink, the Pilot G-Tec C4 enables fluid, skip-free writing. No need to press hard with this latest type of gel ink, which also prevents feathering. Its extra fine 0.4mm nib writes a fine 0.2mm line, making it ideal for detailed writing such as accounting and correcting tasks.Long lasting and durable, this Pilot gel rollerball takes refills and has a metal nib. The Pilot G-Tec C4 Rollerball also features a cap with clip, making it perfect for every day home and office use.