Wilson Jones 36814NB 368 Basic Round Ring Binder, 1" Cap, Black Traditional three ring binder with round rings has a 175 sheet capacity in the 1 inch binder size with 2 convenient interior pockets. Durable polypropylene construction ensures long-lasting use and is better for the environment than vinyl. Binder contains 100% recycled chipboard with 75% post consumer waste. Black Binder.