This design uses a simple .250 hex socket to attach to a drill gun and auto-reel your cords. I have included the Fusion 360 file with diameter, length, and cord size parameters.
You can also attach multiple of these with the bottom hex that fits into the hex. There are also 2 holes to feed your cord through and tie off to before you start the auto-reel functions.
Happy reeling.
The author marked this model as their own original creation.