16mm -120mm Diamond Hole Saw Core Drill Bit Cutter Glass Marble Ceramics Bits

Clean Water Is Required To Cool The Drill Bit When Drilling. Good Cooling Can Significantly Extend The Service Life Of The Hole Opener. The Appearance Of The Product Will Be Slightly Different. For Example, The Hole Opener Below 25mm Is A Hollow Handle, And The Hole Above 28mm Is A Solid Handle.

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