Designed for Pencils and Small Pens: Engineered with a rugged double-sided texture, our upgraded adhesive pen holder is built to flawlessly grip pencils and pens within the 7mm - 10mm diameter range. Note: Not suitable for markers Must-Have for Teachers: Elevate your classroom organization with this essential teacher supply. Keep pencils, drawing tools, and other stationery for students, eliminating the hassle of searching for misplaced pens Sleek and Indestructible Silicone Build: Crafted from flexible silicone, these holders are not only easy to use but also crack-, ensuring years of dependable use Secure and Versatile: The adhesive backing guarantees a solid attachment to any - be it notepads, clipboards, computers, calendars, shopping lists, desks, or countless other spots. Your tools always be within arm's reach. Note: not suitable for wall Color: Black Material: Silicone Package Contents: 20*Adhesive Pencil Holders Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.