Help finding sprocket adapter name

I heard about a sprocket adapter awhile back form a friend, and I am trying to track down the name/ website.

It was a sprocket adapter where the sprocket was attached to a freewheel, and the freewheel had 2 pins that locked it into the clamshell. It allowed you to remove the 2 pins and ride the bike without the extra drag of the motor.

Anyone have a link to it or knows the name by chance? Building a new bike here soon, just ordered the motor and bike online. Wanted the adapter to be ordered tonight or tomorrow so hopefully it all arrives together.

Exactly what I was looking for, thanks MotorBicycleRacing. too bad about the out of stock issue.

However,a quick google search says Helio has them for sale here "http://heliobikes.com/store/HybriPed-Hybrid-Pedal-Sprocket-p20.html"

Any chance you have used it or know of someone what has? I'm hoping it is at least as good as the stock clamshell adapter.