Hydraulic crimper.

[Highpower]

I almost bought one once upon a time, but knew I would never get that much use out of it. I've got a couple of the old 'Armstrong' powered bolt-cutter type crimpers instead. And an impact punch type for battery & welding cables. Only needed them a few times but probably cost close to what a hydraulic crimpers cost now if I add them together.  

Nice job on the fencing.