• Precise rotation adjustment through rotating ring, 3.000 to 25.000 RPM.• Doriot coupling system of the Contra-Angle.• Bur direct fitting which dispenses use of straight handpiece.• Optional with external cooling system.• Work pressure between 43 and 50 pound/inch² (3 to 3,5 bar).• Borden connection (2 holes) or Midwest connection (4 holes).• Body with 20mm of diameter, following international standards.