Fangrui Product Details Advance Magnetic Grip: Each Pen Holder Is Fabricated From Silicone Material, Integrated With Strong Magnets To Provide A Firm Hold On Metal Surfaces Like Refrigerators, Whiteboards, Filing Cabinets And Laptops. These Fridge Pen Holders Your Important Writing Tools Are Just Within Your Reach And Get Lost. Ingenious Elastic Loop: Our Set Comprises Cutting-edge Two-way Adjustable Elastic Loops That Are Capable Of Comfortably Accommodating Pen Sizes Ranging From 6mm To 20mm. This Helps To Securely Stow Your Pens And Add Of Class To Your Work Space. Super Easy Installation: Place Your Go-to Pens Between The Upper And Lower Elastic Rings And Then Mount Them On Any Metal . The Magnetized Silicone Automatically Adheres, Reducing Untidiness At Your Workspace. Note: To Install With The Hollowed Side Facing Inwards And The Larger Side Of The Pen Holder Facing Outwards To Secure A Better Hold On Surfaces. Superior Quality: Each Package Contains 8 Magnetic Pen Holders Built Of High Quality Silicone Material Tha