Useful Little Things: We have improved the pen holder so that it can hold more fine and fat pens. Each silicone pen holder can be expanded from 7 mm to 13 mm in diameter, allowing to hold most size of pens or pencils. As desk accessories that stick around for years! You will love them! Flexible Design: Different from other ordinary pen holders, our pen holders are made of soft silicone, flexible and elastic. Pen holder for desk has texture design, which greatly improves the grip of the pen holder, flexible design holds a variety of pen sizes. So if you have a variety of pen/pencil/marker sizes, they will work reliably well. High Quality Materials: The pencil holder are made of food grade silicone, BPA-Free, that is safe for both adults and kids! Each desk pen holder has a self-adhesive back that holds strong to most non-porous surfaces, no movement toward coming off at all when yanking out the pen. Applicable Occasions: These pen holders are great for Schools, Office, Kids Desk, Clipboards, Gym, Car, Hospital, Banks... anywhere you need a pen! Adhesive pen holder small and doesn’t take up much space at all. Highly recommended product for anyone that need to have pens/pencils at the ready anywhere, no longer waste time looking for a pen. Simple Yet Utility Gifts: You will get 10 pack pencil holder, small and lightweight, easy to carry and store, enough quantity to meet your needs. They are also practical gifts for teachers, classmates, colleagues, friends, doctors, nurses, etc.