Marbig Numerical Indices. Ideal for binders that are used regularly as the strong polypropylene allows files to be frequently accessed whilst maintaining appearance and they won't break or tear with constant use.
Dividers are waterproof and can be wiped clean.
Tabs are printed numerically for filing by month, week, date, day, etc and are available in grey or white.
White PP Indices are also available in Extra Wide - 5 and 10 Tab - see Organisation Dividers - Extra Wide.