【Adjustable & Rotatable】 The hand magnetic pen holder with an adjustable spring loop can be expanded from 7 mm to 17 mm in diameter. The expandable loops fit almost any pen or pencil. 【Stainless Steel Construction】 The magnetic pen holder clip is made of stainless steel with magnetic backing. The sturdy material makes it waterproof, not easy to rust, flexible, and durable. The adjustable ring will not be damaged under strong pulling. 【Multiple Uses】 The pen holder clip can be used for refrigerator, whiteboard, erase board, bulletin board, map, fridge, calendar, and any other metal surfaces in the home, kitchen, and office. Used to place shopping lists, shopping lists, photos, memos, and notes. 【Desirable Gift】 The Magno magnetic pencil holder is practical to friends, teachers, doctors, coworkers. Which takes small space and is easy to carry. Nice gifts to make life more convenient. 【Size & Quantity】 There are 4 packs in total, and the size is: 0.7*0.7*0.7inch，each clip only has 0.015lb. The small size and lightweight, make it is an excellent accessory for home or office (4 Pack) Magnetic Pen Holder Clip, Stainless Pen Holder Clip with Adjustable Spring Loop, Magno Magnetic Pencil Holder for Refrigerator Whiteboard Erase Board and Bulletin Board Map - Black