The SP600 uses standard Renishaw M4 thread styli, that thread into the stylus holder (SH600-STD or SH600-EXT).  Styli can be changed manually by screw or by exchange of the kinematic stylus holder using the SCR600 or SCP600 stylus change rack.

Always use the Renishaw stylus spanner provided to change styli to avoid damage to the stylus holder or stylus.