Optimum Heavy-Duty 3-Ring Binder, 2.3' Spine -
Optimum Heavy-Duty 4-Ring Binder, A4 Sized, 2' Spine. A durable 2-inch steel spine, precision Swedish engineering, and an ingenious dual-hinge mechanism highlight the Optimum Binder, the world’s most dependable binder. This steel-backed 4-ring binder is designed for use with A4 paper. It is ideal for anyone who needs to continuously reference ...
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