
Mediocre at best. Really cool idea, but as another reviewer said, it's only really useful if you have drywall that's 1/2 inch or less thick and no insulation. I had to run a bundle of speaker and romex cables in an insulated wall with 5/8" drywall. This thing didn't help much. Where it works great in non-insulated walls is connecting HDMI from one combox to another combox for an installed TV so you don't see the wires.Also the magnet on the fishing wire is too big.It should be sharper than blunt so it can easily pass the insulation.

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