( i ) Normal single crystal probe 2. 5MHZ ( ii ) Normal single crystal probe 2. 5MHZ ( iii ) Normal single crystal probe 2. 5MHZ ( iv ) PKBB- 2: Connector Cable BNC- BNC ( v ) ES- 45- Replaceable Protective Membrane ( vi ) ES- 45- Replaceable Protective Membrane for Normal Probes