This line of swords is based around the D-Guard found in an ancient Wing Chun warrior's tomb in China. We know the swords are from a Wing Chun man due to the "Baat Jarm Dao" inscription on the swords as well as a manual found with them. While the information and pictures of the tomb's contents remain a Chinese state secret that will only be released many years from now, we have gotten confirmation of their existence.
The only real difference in this line compared to the Flagship/Premium lines is the D-Guard shape, the fact they have 1/2 handles to fit together better in 1 hand and use a Trapping-Only quillon. The D-Guards on this line are more square and have a spike on the bottom edge to prevent blocked weapons from slipping under your sword and hitting you. They also make your punches a lot more penetrating.
Those that are familiar with the WingTsun lineage swords might notice that the D-Guard is very similar to those used by Leung Ting's lineage. In fact, Grandmaster Ting based his design around the same ancient warrior's swords. They are not his original invention. Many WingTsun practitioners will really love our models of this sword.