Unibind ST1025 The Unibind ST1025 Professional SteelBinding System has 10 binding elements, allowing the binding of up to 50 documents simultaneously or multiple bindings up to 340 pages. Our most complete system provides storage drawers to organise all your Unibind covers and is mounted on high quality casters that make moving the system simple. The Unibind ST1025 offers 9 cooling bays, 3 of which can accommodate large binding jobs. This system is perfect for high production output, where storage space is limited.