The SY-138 is a classic, standard-style whiteboard marker featuring a bullet tip that delivers smooth, quick-drying lines with minimal smudging. It is suitable for a wide range of applications such as meetings, teaching, or on-site presentations.

The barrel offers ample space for custom printing—whether it's your company logo, campaign message, or promotional slogan—making it a popular choice for OEM/ODM manufacturing, trade show giveaways, educational use, and corporate bulk purchasing. It works well both as a standalone item or bundled with whiteboards, helping elevate your brand image through consistent visual presentation.

With reliable quality and flexible customization options, the SY-138 is a practical pen trusted by many brands for high-volume needs.