Are you using the right bags in your Formax shredder? Thin, flimsy bags can tear and break making a mess of your work area or office. Our heavy duty, reinforced shred bags are the right choice for your Formax 8400 shredder. All our shred bags come with the Whitaker Shred Bag Guarantee, if the bag does not fit then return it to Whitaker Brothers for a full refund. Don’t forget the shredder oil, our WBBM-55 shredder oil is available in convenient pints or economical gallons to keep your shredder running smoothly.