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PRECISE PROFESSIONAL SIZES: Featuring a 35mm effective working length and a total length of 65-80mm, this specialized hole opener is built for deep drilling tasks. Available in diameters 1/4"-5/8"（6/8/10/12/14/16mm with a 1/4"(6.35mm) hex shank to fit most standard drills
ADVANCED 2-IN-1 BRAZING TECH: Choose between premium Gold or Silver finishes with our upgraded brazing process. This 2-in-1 hexagonal shank brazing dry drilling specialized hole opener offers a dual grinding and drilling function, ensuring the diamond stays sharp without sand loss
EFFICIENT DRY DRILLING DESIGN: Optimized for dry drilling, this 2-in-1 hexagonal shank brazing dry drilling specialized hole opener allows for fast, clean holes without the mandatory need for water. The extended diamond surface ensures rounder holes and a faster opening speed
WIDE MATERIAL COMPATIBILITY: This professional-grade bit is ideal for porcelain tiles, marble, vitrified bricks, and granite. It also performs exceptionally well on ordinary glass, microcrystalline stone, ceramics, and quartz stone, ensuring no damage to your expensive materials
PRO TIPS FOR LONGER LIFE: To maximize durability, start at a slight angle to create a moon-shaped positioning groove before drilling vertically with steady pressure. While designed for dry use, adding water during the process can significantly extend the sharpness of the bit

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Professional Masonry Drilling Solution
Take your tile and stone projects to the next level with our 2-in-1 hexagonal shank brazing dry drilling specialized hole opener. Designed for durability and precision, this upgraded brazed bit eliminates the frustration of dulling tools and sand loss, making it the ultimate shortcut for clean, professional holes in hard surfaces.

Tips for Total Beginners:
1. Positioning: Start at a 45-degree angle with high RPM to create a "moon-shaped" initial groove.
2. Drilling: Once the groove is formed, slowly transition to a vertical position and drill with constant, steady pressure.
3. Maintenance: Adding a small amount of water during drilling will further enhance the lifespan of the diamond coating.

Product Name:

Specifications:
Working Length: 35mm (1.38 inches)
Total Length: 65mm - 80mm
Shank: 6.35mm (1/4") Hexagonal Shank
Color Options: Gold / Silver
Technology: Vacuum Brazing (Anti-Shedding)
Application: Porcelain, Marble, Granite, Ceramic, Glass

Set Includes:
1set * 1/4"–1/2" (6–12 mm)
or
1set * 1/4"–9/16" (6–14 mm)
or
1set * 1/4"–5/8" (6–16 mm)
+
1 pair of gloves
Plastic Drum Packaging

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normally after receiving them.
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please contact us through Amazon.
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