Strong and durable for long-term use: The pen holder is made of metal, designed for lasting performance. The adhesive backing allows secure attachment and is suitable for most surfaces. Retractable ring: Manganese steel pen holder features an adjustable spring ring. Each ring expands from 7 mm to 18 mm in diameter, accommodating most pen or pencil sizes. Abundant quantity: Includes 10 adhesive pen holders. Compact and lightweight, easy to carry and store, sufficient to meet daily needs. Simple and practical gift: This pen holder is ideal for colleagues, teachers, doctors, nurses, and more. A thoughtful gift to help simplify everyday tasks. Applications: Can be attached to dry, flat surfaces such as whiteboards, refrigerators, wipe boards, bulletin boards, maps, and calendars. Also useful for holding shopping lists, pens, pencils, and other small essentials. Keeps items organized and within reach. Color: Black Material: Metal Size: Clip width 18 mm Package Contents: 10 x Pen holder Note: Small parts. Not suitable for children under 3 years old. Content limited to items listed above; others not included. Lighting and monitor differences may cause slight color variations between image and actual item. Measurement error allowed within +/- 1-3 cm.