Cardinal Infinity ClearVue Locking Slant-D Ring Binder, 2-Inch Capacity, Black (34121) Ultra lightweight binder is so durable and strong, it's guaranteed to last 5 years! Cold-crack tested to 14 degrees F Locking Slant-D rings hold 25% more material than standard round rings Clear overlay for customization on cover with label holder on spine Archival-safe poly will not lift or transfer inks or toners