I needed a swaging tool capable of crimping 5/16 aluminum loop sleeves over 5/16 flagpole halyard rope with stainless steel cable core. I opened the swaging tool to it's extent, but the aluminum loop sleeves would not fit in the 5/16 opening without me forcing them by tapping them in with a hammer. I'm not sure if that's the fault of the tool, or the particular sleeves I bought. Compressing the swaging tool to complete the 5/16" crimp took some effort, but wasn't impossible. Once I had the loop sleeve in place, I placed one handle on the ground, put my foot on the tool's pivot point, and pressed the other handle down with both arms. I was able to complete all the crimps I needed, so I'm giving the tool 4/5 stars. The tool is a good value. It was the cheapest swaging tool capable of 5/16" that I found.The crimping loop sleeves I used that required force to fit in the tool were: Antrader Aluminum Crimping Loop Sleeve 20PCS Wire Rope Aluminum Sleeve Clip Fittings for 5/16" Wire Rope and Cable