ABB takes the splicing of different-sized conductors to a new level of economy and efficiency with cast-copper reducing splices. In addition to a lower cost, the key benefit to these splices is in their constant outer diameter. Unlike screw-machined, externally contoured splices, cast-copper reducing splices require no change of tool or die between crimping each end. Just slide each wire easily into the chamfered barrel, and use the same color-keyed tool and die to crimp both ends. The consistent O.D. also makes these splices faster and easier to insulate with clear heat-shrink wrap than a contoured strength for heavy-duty applications, and tin-plated copper material provides high conductivity and superior corrosion resistance.