-Diameter:0.8mm/1.0mm/1.2mm/1.5mm/1.8mm/2.0mm/2.5mm
-Material: Electroplated Emery with Diamond Coated
-The Drill Bit Made from Electroplated Emery Twist Drill Bit and Diamond Coated
-Suitable for Jewelry,Ceramics,Glass and Semiconductor Material
Package Include:
-According to Your Choose.