This Swager has the power for copper and aluminum sleeves but it is difficult to hold in place, and it is hard to get four crimps on an average copper sleeve. Copper also mushrooms a bit on the end with this Swager, so that means rotating the swage another three times on each crimp with difficulty aligning them. So, 16 crimps on each sleeve. I'm using bc I have to, but sure wish I could afford a hydraulic one... it's durable enough, just wonky.