Pen holder clips manganese steel pen holder self adhesive pen pencil organizer with adjustable spring loop for refrigerator whiteboard erase board and bulletin board map Good helpers: These pen holder clips help to hold small things, save users from looking for those things all the time. Wide usages: These pen marker holders can be applied to the whiteboard, refrigerator, erase board, bulletin board, map and calendar, etc. Good gifts to students, teachers, postmen, doctors, nurses, pilots and so on. Specifications: Color: as the picture shown Material: manganese steel Diameter: 20 mm Package include: 10 x Pen holders Note: Small items. please keep them away from children under 3 years old.