Diamond Core Drill Set of 5. M14
Specification: Hole dirll size: 25/35/40/50/60mm, Diamond Shank, M14 Thread. 
Application: For drilling granite ,marble, ceramic, masonry, porcelain, 20mm porcelain. 
Dry and wet drilling, very high efficiency, multi-purpose drilling, long life drilling.
 
Safety Precautions: Do not use without appropriate safety equipment. This includes ear protetion, safety glasses, safety guard. 
 
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