Precision Diamond Core Drill Bit Set for Professional Tile & Stone Work

Industrial-grade diamond grit coating ensures ultra-sharp cutting edges for seamless drilling through ceramic tiles, porcelain, marble, and granite with zero chipping. Electroplated nickel-bonded segments provide 3X longer lifespan than standard carbide bits.

Laser-welded steel body with reinforced shoulder design prevents wobbling during wet/dry drilling. Includes universal 1/4" hex shank compatible with most rotary tools and drill presses.

Perfect for plumbers installing pipe penetrations, electricians creating outlet holes, or DIYers handling backsplash installations. Coolant channels minimize heat buildup for continuous operation.

Complete 8-piece set covers 3/8" to 1-1/2" diameters for versatile hole sizing. Vacuum-brazed technology guarantees precise diamond particle alignment for smooth, vibration-free cuts.

Note: Always use with guide plate for perfect 90° entry. Includes protective storage case.