Drill bit set Holzmann DTBKS6-68 — vacuum-brazed diamond, 6 pieces

Holzmann DTBKS6-68 is a 6-piece vacuum-brazed diamond drill bit set engineered for precise hole making in hard, brittle materials. Each bit is manufactured with a vacuum-brazed diamond segment on a steel body to deliver consistent cutting performance and improved wear resistance. The set covers common diameters used in ceramic, porcelain, glass and natural or engineered stone applications, and is intended for use with drills capable of low-speed, steady-pressure operation. Wet drilling or continuous coolant flow is recommended to reduce heat and prolong tip life.

Advantages

The vacuum-brazed diamond construction ensures a uniform abrasive layer bonded to the bit, providing reliable cutting action on hard materials without the need for core removal. Consistent geometry across the set supports predictable hole size and edge quality. The steel shanks are compatible with standard drill chucks, and the design tolerates wet drilling conditions to control temperature and dust. The set format supplies multiple sizes for flexibility across installation and repair tasks.

Suitable for

• Drilling through ceramic and porcelain tiles for plumbing and fittings
• Creating holes in glass panels and mirrors for mounts and fixtures
• Working on natural stone and engineered countertops for sinks and taps
• Precision drilling in thin masonry and decorative stone elements

Key specifications

• Quantity: 6 pieces covering a range of common diameters for tile and glass work
• Tip type: vacuum-brazed diamond segment for wear resistance and stability
• Shank material: steel shanks compatible with standard drill chucks
• Intended use: wet drilling or with continuous coolant to manage heat and debris
• Application materials: ceramic, porcelain, glass, natural and engineered stone

How to use

Select the appropriate diameter from the set for the hole required and secure the drill bit in the drill chuck. Use low to moderate rotational speed and apply steady, light pressure; allow the diamond tip to abrade the material rather than forcing the bit. For glass and porcelain, begin with a shallow pilot point and maintain constant coolant or a steady water feed to cool the tip and flush debris. Withdraw the bit periodically to clear slurry when drilling thicker material. After use, rinse the bit under water and store dry to avoid corrosion of the steel shank.

Recommendations

Use a drill with variable speed control and a stable mount or guide to improve accuracy. Always wear appropriate eye protection and use water feed or a dedicated drilling rig for continuous cooling. Avoid hammer action or high-speed settings; do not force the bit to prevent chipping and premature wear.