Unibind Staple Steelbook Hard Cover, Portrait 8 1/2" x 11", Aluminum (Binds up to 40 Sheets/80 Pages) Fast and convenient binding Easy to use at home or in the office  the only tool needed is a standard stapler. Bind a professional, hard- or soft-cover presentation book or photo book in seconds. The staples are concealed in the spine by enclosed self-adhesive strips. Color: Aluminum/ Made of 70% Recycled Material/ 5mm Portrait