11x17 3" EZ Locking Angle-D Ring Turned Edge Binder, Red (523760) Euro Hinge, Multi-Scored Flex Hinge Standard 3 Ring, (Three) Rings, 4.25" (4-1/4 inch) Center to Center. Standard 3 hole, (Three) holes, 4.25" (4-1/4 inch) Center to Center.