Small Multi-Step Wire Looper:- Shape rings - Make consistant loops using the 3 barrels- Barrels measure: 5, 7, & 10mm (3/16", 9/32", & 3/8")- The lower jaw is covered with PVC tubing to prevent scratching or marring the wire- Features stainless steel heads and cushion grips- To harden wrapped loops, simply tap the wire with a nylon head hammer.