1. Three Glue Rollers Book Binder 2. Book Binding Size:420mm 3. ... , Glue Binder, Book Binder Machine,Perfect Binding Machine, Book Binding,Three Glue Rollers Book Binder Automatic Wireless Glue Binding Machine Model50F ... convenient to adjust Book back binding flatting from outside 9. Three Glue Rollers: Two glue rollers for brushing glue, one glue ...