The tools are adjusted. The adjustment capacity is changing according to the diameter and types between 0, 25 mm and 1 mm. The tools have an adjustment mechanism which gives the possibbilty to adjust very high precision measurements. For °5 - °80 mm tools, adjustment precision is 0, 0025 mm and for bigger than °80 mm tools adjustment precision is 0, 0050 mm. Yamasa dx type roller burnishing tools can process the cylindrical holes up to h8 tolerance with a single adjustment. These tools are capable to process all kinds of metallic materials with 1400 n/mm2 tensile strength and hardness up to max. 42-45 hrc. Tools work by turning to right. Either tool or workpiece may turn. These tools can be used on universal or cnc lathes, machining centers, drilling machines, milling machines or other machines which process by turning. The tools can be tied to all machines easly and practically. Tools have rather a long life. It is possible to use the tools for a long time without size change due to abrasion.