What happens when you need a mandrel for something like a small soldered ring? Enter the Acculoop Precision Round Nose Pliers. The conical jaws can make loops 2mm to 8mm. The widest part of the cone on the 8mm side is actually 9mm. Rotating and squeezing the ring to re-round it will not mar the metal if a piece of plastic tubing is slipped on the side opposite the ring. Jump rings are hard to texture around the outside, but holding them in place and texturing on these pliers is easy with the tubing. Another bonus, when using the markings to make a coil of wire, the plastic tubing protects the coil from dents in the wire that are common when making coils with pliers.