The MK Dent 4-hole Dental Airmotor has a maximum speed of 20.000 rpm. Low speed air motor comes with external water supply option and infinitely adjustable right and left drive. This air driven dental air motor has guided interior separate coolants and a Standard INTRAmatic connection, suitable for all common instruments. MK Dent dental handpieces and accessories are high quality and provide exceptional performance. MK Dent Dental Air Motors come with a 1 year warranty.