[Strong Magnetic Pen Holders]Our pen holder is made of silicone and has built-in strong magnets, which can be directly attached to metal surfaces such as refrigerators. You can also attach magnetic sheets (12 pieces are included) to smooth non-metal surfaces for storage of pens and other objects. [Compatible With 6-20MM Pens]Made of reusable, non-deformable silicone, the design of the two-way elastic loop makes the pen more stable and perfectly fits all pen sizes. It is also light, and can be directly put on the pen without affecting writing, making it convenient and difficult to lose. [How To Use It Correctly]Note: To achieve the strongest magnetic , please that the maximum area of the pen holder is adsorbed on the metal surface or magnetic sheet (do not use the side with holes to adsorb) [Various Usage Scenarios]Can be used on any smooth surface and can be removed in seconds. It is also suitable for refrigerator stickers, fixed charging cables on the desktop, and for organizing keys, scissors and other items weighing Less than200g. Material: Silica gel colour: Package Contents: 12 x magnetic pen holder