Premium M14 Thread Diamond Core Drill Bits – Precision Cutting for Tough Materials

High-quality diamond grit coating ensures superior durability and faster drilling through porcelain tiles, marble, and glass. Precision-engineered M14 thread design provides secure attachment and smooth operation with most standard drills.

Perfect for professional contractors and DIY enthusiasts tackling hard surfaces. Set includes versatile sizes (20MM, 35MM, 40MM, 45MM, 50MM, 68MM) for multiple applications like plumbing, electrical installations, and custom craftsmanship.

Laser-welded segments prevent premature wear, while optimized cooling slots reduce heat buildup for extended bit life. Backed by global wholesale pricing—bulk orders get unbeatable value.