Pentel of America, Ltd. K437B Red Retractable Gel Pen

Red retractable gel pen for everyday writing

The Pentel K437B uses a medium-point gel tip that delivers smooth red ink. Its triangular barrel prevents the pen from rolling off flat surfaces. The ink formulation is permanent, waterproof, fade-proof and acid-free for archival quality. A latex-free grip provides comfort during extended writing sessions.

Click mechanism and grip improve daily use

A top click advances the tip and a side button retracts it, protecting pockets and pen cups from stray marks. The triangular grip shape encourages a relaxed hold that reduces hand fatigue. These features replace the need for a separate cap that can be lost. The design suits both left- and right-handed writers equally.

Simple to start using with minimal issues

Remove the pen from the pack and click the top once to begin writing. No refills or cartridges are included in this dozen pack. The gel ink may skip briefly on very glossy paper until the ball seats. Store the pen tip-up when not in use to prevent leakage.