Designed and built in the USA to make a lasting impression, this Machina three-ring binder by Pina Zangaro sets the standard for quality. Whether for presentation, archiving or general use, there is no better-made aluminum binder available anywhere. Unlike others on the market, this aluminum binder is made with ½” knuckles to prevent bending or crushing along the hinge, and anodized aluminum, rather than painted aluminum, for increased durability. You’ll find cheaper aluminum binders out there, but none better. Capacity: 1/2" or 90 sheets (20 lb paper). Customization and imprinting available direct from Pina Zangaro.