Quick Change Post Holder Kit Set Boring Bar Turning Tool Holder. We EXPERTS in this category. Quick change tool post, cutter holder are major attachment of ordinary lathe, is composed of a tool post and several toolholder, according to the needs of machining, choose corresponding holder, can be carried out outside garden, surfacing, cut off, knurling, drilling, boring, reaming and other processing. Applicable to the comparison method to measure the workpiece diameter. Tool holder for the adjusting screw nut and tool, adjust installation height , easy to operate, shortening the time ...