The NSK EX-203 motor has unparalleled value in the dental industry. What you will get with this handpiece motor is quiet, low vibration, and long lasting operation. ISO E-Type external water spray. 1:1 Direct Drive Pack contents: Air motor (EX-203C), Straight handpiece (EX-6B), Contra-angle handpiece (NAC-EC). The components of the pack may be ordered separately. Forward and reverse direction. Variable speed both directions. Max 22,000 rpm.