1, Adjustable Spring Loop- The innovative stainless-steel design allows the loop to expand to fit any size pen, pencil and marker, smaller to larger, 360 rotate. 2,Strong Adhesive Backing- Perfect pen clip is perfect for sticking to the sides of your monitor, refrigerator, night stand and any other home office Kitchen bar usage. 3, Stainless steel material- very durable and stylish, offering you a better experience. 4, Carry Everywhere-The pocket clip can be attached to clipboard and binders, with the pen holder clip, never worry missing your pens and pencils again, keeps your pen handy all the time. 5, Kindly note- These self-adhesive pen hold clips work great on a solid metal or plastic pen but please kindly understand rubber may feel don't slip in as easy due to frictional resistance . Base size: 20mm Material: Manganese steel Color: Silver Package Contents: 12 pcs x Pen Clipboard Holder Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.