• Single crystal               Si,   
• Conductivity:               N type ( undoped)
• Resistivity:                   >1000 ohm-CM
• Size:                              4" diameter x 0.5 mm
• Orientation:                 (111)  
• Polish:                           One side polished
• Surface roughness:       < 5A

Optional:  you may need tool below to handle the wafer ( click picture to order )