Rotor Stop Positioner (RSP) Home > Product > Rotor Stop Pos Rotor Stop Positioner (RSP) designed For Wafer Spin Rinse Dryer SRD Kit for Power Stop / BreakC type cramp ring Ask For Price! Please enable JavaScript in your browser to complete this form.Please enable JavaScript in your browser to complete this form.Name *Email *Subject *Comment or Message *NameSend Message