Classic yet contemporary black base holds standard calendar refills up to a 3.5 x 6 or maximum 6.5 inch page size</br>Black base is made of high-impact molded plastic and is recyclable; two ring binding; base overall size is 7.5 x 8.75 x 1 inches</br>Holds standard 17-style calendar refills (E717 50?? E517 50?? E417 50?? S170 50?? E017 50?? E717T 50?? and E717R 50)?? sold separately</br></br>Product Description</br></br>Classic yet contemporary?? this high-impact black plastic desk calendar base has two rings to secure standard?? 17-style loose-leaf calendar refills (sold separately).</br><br/>http://www.amazon.com/gp/product/B00006IAX1