When the tab breaks on the back of the blade this is the replacement.  You will need a small torks wrench to replace.

Used for all Andis detachable blade clippers

Prefilter for K9 Dryers

For all blades larger than 40

For 40 blade

Square end

Round end for Andis AG

Fits 4HP motor from Metro and Electric Cleaner Co

Arco replacement battery

Andis 5 speed cord

4.0H.P. Twin Fan Motor #MVC-157D Can also be used for K9 4.0 HP dryers
SKU: MVC-157D ADM-4SFV AF-3CB AF-3PG B-3 DIDA-4 MB-3 MB3-CD OV-4ABC OV-4BC OV-4BCSF OV-4BCSFV OV-4PNHSF OV-4PNHSFV TT-2X4 VNB-73AG VNB-73B VNB-83BA

Brush ABC-3