Show your best with this professional, book like finish. Documents bound with GBC Velobind Hot Knife Binding Strips are great for filing, stacking and mailing. With GBC's patented Hot Knife binding technology, spines permanently lock pages into place to keep reports and proposals secure. These Velobind Binding Strips include 11 equally spaced pins (for 11" books) and are designed for use with GBC's line of Hot Knife Velobind Systems including the GBC V800pro Velobind System One , GBC Velobind System Two , GBC Velobind System Three Pro and GBC Velobind System Four "Bind".