If you need permanently bound documents with a top quality, contemporary finish, the high-tech GBC WireBind spine is the ideal binding solution. From prestigious client proposals to annual reports, GBC WireBind will take your presentations to the next level. WireBind enables pages to lie flat and rotate 360 degrees for convenient note taking and photocopying. Documents of up to 130 pages are permanently bound and tamper-proof... so you can rest assured that your work will not only look good but will stay totally secure. 21-Loop Wires are suitable for use with Multi-functional, 21-loop comb/wire binding machines. Features Rings quantity 21 Spine width 8 mm Material Metal Format A4 Product colour White Packaging data Quantity per pack 100 pc(s) Weight & dimensions Height 297 mm