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Thin Wall Core Drill Bit for smooth chip free coring of porcelain, natural stone, engineered stone, granite, and moreModel Diameter Width ThicknessGrit GradeDBA203/4"(20mm)8mm1.5mmStandardDBA251"(25mm)8mm1.5mmStandardDBA281-1/8"(28mm)8mm1.5mmStandardDBA321
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Return Policy (60 day easy Return)| Model | Diameter | Width | Thickness | Grit Grade |
| DBA20 | 3/4″(20mm) | 8mm | 1.5mm | Standard |
| DBA25 | 1″(25mm) | 8mm | 1.5mm | Standard |
| DBA28 | 1-1/8″(28mm) | 8mm | 1.5mm | Standard |
| DBA32 | 1-1/4″(32mm) | 8mm | 1.5mm | Standard |
| DBA35 | 1-3/8″(35mm) | 8mm | 1.5mm | Standard |
| DBA38 | 1-1/2″(38mm) | 8mm | 1.5mm | Standard |
| DBA41 | 1-5/8″(41mm) | 8mm | 1.5mm | Standard |
| DBA45 | 1-3/4″(45mm) | 8mm | 1.5mm | Standard |
| DBA51 | 2″(51mm) | 8mm | 1.5mm | Standard |
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