The Polychem B400 Series battery operated friction weld tools are "state-of-the-art", ergonomically designed. The new B Series are shorter in length, lighter in weight, and better balanced for easier operation. The Polychem B Series tools can pull up to 700 pounds of tension and operate with both polypropylene and polyester plastic strapping 7/16" to 3/4" wide up to .040 thick.

Allstrap opinion: You should save your money and go buy a Fromm or Orgapack. The "B" is an ok tool, but over priced for what you get.