Good comparative video Leon. I was thinking the clone was a BDS copy but i haven't seen a Matt Black BDS before so am cautious to guess the branding. One of life's mysteries. The spools are typical Assa spools and are utilized through out the Assa Lockwood applications in most formats. Have a good one:-)
There are a bunch of different styles of actuators. They depend on the application. The 270 ovals have more. The 290 oval only seems to have one style of actuator.