Great wee tool for any wire projects, easy to use, does the job well.
This tool is used to round of your wire after it has been cut. Also called 'bur cup'. Simply place the wire end in the cup and turn the wire-rounderer-tool round until the edge has been rounded and smoothed off. The inside serrations file down the sharp edges to smooth them off.
Fits up to 1.8mm wire.
It is a time saver, though not as sharp as I thought it would be. Some elbow grease is required :)
This saves such a lot of time