... high precision3.easy insert replacement4.general uselevel type tool holder Level type cutting toolMaybe you will ask:what’ ... needs.You can use a tool rod, we'll match you up with corresponding blade, and we will ... tool is composed by two parts :holder and insert:and the holder is clamping ,and the insert if ... .4.When installed ,you need to tighten the holder screw,and generally ,you need to tighten the ...