Guided Products ReBinder Select Recycled Chipboard Binder, 0.5 Inch  (GDP00009)
, three-ring binder helps protect your letter-size documents while protecting the environment. Recyclable, recycled binder is made from a sturdy, recyclable corrugated cardboard and includes a unique removable, slanted round-ring mechanism so you create zero waste. Locking ring mechanism is screwed into the cover and easily unscrews for easy reuse with a new cover and for recycling. Replaceable cover is made from a high percentage of recycled fibers. Durable, 35 point, flexible cover is nontoxic and more resistant to spine-tearing than vinyl. 1/2" capacity holds up to 100 sheets of 20 lb. paper.