Thanks for ideas, I thought Rod cutter, but the edges seem more sharp designed for shearing something that needs a clean edge not sure if they’d hold up to cutting metal Rod, I’ve added a full pic, off the top of my head the handle is about 12″ to 14″.
Edit, there’s a pin that holds the top cutter in place not in it in the photo if you look carefully, so probably quite easy to replace as the lower one.