... The tool is composed by two parts: holder and insert, holder is for clamping, and the insert is ... for cuttingR means :right hand holder, from right to left, to deal with the ... 4.When installed ,you need to tighten the holder screw,and generally ,you need to tighten ... inner hole turning tools, screw turning tools, small cutter holder, grooving tools, knife folders, boring tools and related ...