Fromm pack has many tools for polyester strapping
Fromm started with the P320 (light duty) and P321 (heavy duty), and have moved up from there. The P322/p323 were the second generation. The P324/P325 were the next generation, these tools switched from a two motor down to one motor. They run the Fromm motor one direction for tension, and the other direction to seal/cut the strapping.
The current generation of strapping tools for poly are the P326 (light duty) and the P327 (heavy duty). They are almost the same as the previous tools, but now use a lithium Ion battery. That means two things: 1) you can run almost double the cycles 2) the battery does not drain over time like the NiCad battery did!
There is also a new super heavy duty fromm tool out the P330. It does 1″ and 3/4″. It is almost 13 pounds, so for .75 inch strapping we almost always use the lighter P327.