Basically the flash extractor is Interlink's answer to Jon Don's new water tool. They simply got the water claw guys to build it for them. It is an economy tool to compete at the low Jon Don price. My guess is it may work better than the jon don tool but not as well as the original tool.
But at an economy price more cleaners will be willing to purchase one.
my original water claw ended up with rusty screws and a lot of the black coating flaked off as well so I stripped it down, got it sandblasted and powdercoated for $30 and replaced all the screws with stainless steel ones for $12.
fixed. 8)