I've been using this for a few years now. Two of them the machine has been exposed to the weather on a frequent basis. The durability is excellent. It works great on Romax type wire. If you get much bigger or smaller it struggles. My primary complaint is that wire jumps out of the track any time there's the slightest kink in the wire. Attaching a drill works, but it's not especially elegant.. . There might be an adapter I long ago lost, but to get it to work I had to use a hex bit to turn the stripper. Which is a bit awkward, but it works. The 4 star is mostly for durability. Given the miles of wire I've stripped and the weather extremes this stripper has endured I had to give it a good rating.
Mikkel 
Lars-Gustav Björkskog 
Morten 
Ralph 
