Aurora GB Elements Binder, 1/2 Inch Round Ring, 8 1/2 x 11 Inch Size, Purple, Linen Embossed, Eco-Friendly, Recyclable, Made in USA (AUA20304) Heavy duty 0.5 inch metal round rings with a durable hinge construction for long-lasting dependable use Open and close triggers for easy access to documents 100% Landfill-safe 70% Post-consumer waste, No V.O.C.'s or PVC