GBC WireBind Binding Spines, 0.375-Inch Spine Diameter, Black, 75 Sheet Capacity, 100 Spines (9775018) WIREBIND SPINES  Permanently bind documents with these professional spines when presentation and quality are primary concerns. Ideal for busy corporate offices, universities and accounting firms. 32-HOLE BINDING  WireBind spines bind pages through 32 holes, with a steady 2:1 pitch, which creates two loops per inch. 85-SHEET BINDING CAPACITY  Sturdy black spines are the perfect choice for small projects. With a 3/8 diameter, they securely hold 85 pages, giving you plenty of space for your work. 360-DEGREE CAPABILITY  This sturdy binding allows 360-degree rotation. Spines also allow pages to lie flat for reading, note-taking and photocopying. Great for creating study guides. PERFECTLY PERMANENT  Attractive, black wire spines give projects a strong, permanent binding with a neat, high-quality appearance. They're an ideal combination of precision and permanence. CONVENIENTLY COMPATIBLE  Spines are designed to work with the GBC W15 WireBind Binding Machine (7708147) for simple, hassle-free binding. 100 PER PACK  A pack of 100 spines ensures long-term productivity for all of your binding projects.