The difference between APT scabblers is the handle configuration. The M321 features an extended handle, making it ideal for larger areas and keeping users more comfortable, and further away from the concrete surface.
For concrete prep, the APT M321 scabbler delivers precision and control. Its triple piston design makes it ideal for rust removal on steel, and removing concrete coatings, laitance, or light buildup without damaging the base surface. It provides fast, powerful blows to get the job done quickly and easily.
It’s also effective for surface roughening when you need to prep concrete for bonding or overlays.
The 321 scabbler is perfect for surface roughening, scaling, and removal. Compact, lightweight, and easy to handle, it’s the go-to choice for tight spaces and detailed surface work.
 
Features:
Triple piston design
Easy to replace, interchangeable pistons
Modifiable steel handle configuration