If you are manually inserting coils, then these pliers are invaluable, as crimping the end of the coil ensures that the coil stays put.
Presco Trade Binding Wires A4 34 Loop 3:1
Presco Binding Wire Spools - 3:1 Pitch
Presco Trade Binding Wires A5 24 Loop 3:1
Pre Punched A4 Binding Covers - Pack of 100
Renz Ring Wire Opener Tool