CNC Thin Wall Core Drill Bit for natural and engineered stone ModelDiameterWidth ThicknessGrit GradeDBH203/4"(20mm)8mm1.5mmStandardDBH251"(25mm)8mm1.5mmStandardDBH321-1/4"(32mm)8mm1.5mmStandardDBH351-3/8"(35mm)8mm1.5mmStandardDBH381-1/2"(38mm)8mm1.5mmStand
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