Unibit or Move-Bit: A steel-chopping drill bit with stepped-diameter slicing edges to enable practical drilling holes in preset increments in stamped/rolled metallic as much as about 1.6mm (one/sixteen inch) thick. Typically utilized to build custom made knock-outs inside of a breaker panel or junction box. Check with a QuestionCost http://joany616omk0.blogadvize.com/profile