MosBug Pen Holder Stainless Clip Clipboard with Spring Fits Almost All Pen Size(Silver) Carry Everywhere: The pocket clip can be attached to clipboard and binders,keeps your pen handy all the time Adjustable Diameter: The spring expands to hold different size pen and pencil,from 7 up to 18 mm. Clip dimensions: 40*10 mm. Durable and Stylish: Made of high quality stainless steel,offering you a better experience with our product Widely Use: Can clip it on your clipboards, calendars, journals, notebooks, planners, sketchbooks or wherever you feels good. Good Choice: Ideal for doctors, nurses, teachers, pilots and other professionals ,can clip on uniforms and pockets, or on clipboards, calendars. Also great for shopping list pads or sketch books.