Large quantity: the package contains 10 pieces adhesive pen holders, small and lightweight, easy to carry and store, enough quantity to cater users' needs Expandable loop: these manganese steel pen holders feature adjustable spring loops, each loop can be expanded from 7 mm to 17 mm in diameter, allowing to hold most size of pens or pencils Durable material: these pen holders are made from manganese steel, can be applied for a long time; Adhesive back design brings convenience to apply on most occasions Wide applications: these pen holder clips can be stuck on the whiteboard, refrigerator, erase board, bulletin board, map, calendar and other dry surfaces, even good helpers to hold shopping list, pens, pencils and so on Practical and considerate gifts: these adjustable spring pen holders are useful to coworkers, teachers, friends, doctors, nurses and so on, nice gifts to make their life easier 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.