Features: Craft with quality silicones, strong magnets, Could directly attached to metal surfaces such as refrigerators, whiteboard, lockers, clipboard, cabinet. Each magnetic pen holder features doubl ended silicones rings make marker pen more stable and perfectly fit various pen size. For strongest magnetic attraction, please ensure that the more area of pen holder is adsorbed on the metal surfaces and magnetic sheet. Widely used on most smooth item and easy to remove. Suitable for refrigerator stickers, fixed charging cables on office desk, organizing key, and other item weighing. Package includes 4pcs magnetic pen holder; 4pcs round magnetic sheets. Perfect for organizing office essential, such as scissor, key, USB cables. Specifications: Silicones Color: White; Black; Gray; Green Marker Holder Size: Approximately. 4.4x1cm/1.73x0.39in Round Base Size: Approximately. 2.50cm/0.98in Weight: Approximately. 16g Package Includes: 4Pieces Magnetic Pen Holder note: 1.Please allow 0-1cm error due to manual measurement. make sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color