20 Inch stratagrit disk brush.
Fits Tennant 240253Replaces
Tennant 240253 Fits
They took the time to find a part number for an old machine.
The DX20 is the right scrubber for our application...indoor and outdoor it is functioning perfectly! Easy to operate; easy to change scrubbing pads/brushes, quickly charges; and easy to empty. We are highly satisfied with this product.