Knurled Red with UNI Jetstream and PILOT FriXion Ball 3 sold SMART-GRIP Pen, (Compatible 4&1 & 4, separately)

Made of aluminum with a high-quality anodized surface Special knurling improves grip! If you use this product, repairs by the manufacturer, such as repairs to compatible pens, will not be covered. Please check the compatibility table for compatible pens. This product was not developed in collaboration with a stationery manufacturer. This customizable item lets you customize the grip of your ballpoint pen to your liking. By replacing the grip of a commercially available multi-function or multi-color ballpoint pen with SMART-GRIP, you can see the tip of the pen more clearly, write more easily, and feel a better grip. Made of aluminum, it's non-sticky and dries quickly. Compatible pens are sold separately.