Diamond Core Drill Bits

The STB Diamond Core Hole Saw Drill Bits are designed for precise, fast, and clean drilling through hard surfaces such as granite, marble, and concrete. Made using high-quality diamond-coated technology, these drill bits deliver smooth cutting performance and long-lasting durability. Moreover, they are ideal for professional installers, contractors, and DIY users who demand accuracy and reliability.

Precision Drilling for Granite, Marble, and Concrete

These diamond core drill bits are specially engineered for hard and brittle materials. Therefore, they allow you to drill clean holes without cracking or damaging surfaces. In addition, the diamond-coated cutting edge ensures smooth drilling with minimal vibration, resulting in precise and professional results every time.

Multiple Sizes for Wide Applications

Available in 6mm, 8mm, 10mm, 19mm, 25mm, 32mm, 38mm, 45mm, and 50mm, these drill bits are suitable for a wide range of applications. As a result, they are perfect for installing taps, pipes, sink fittings, electrical conduits, and anchor points in stone and concrete surfaces.

Diamond-Coated for Fast and Efficient Cutting

The premium diamond coating provides superior cutting speed and wear resistance. Moreover, it reduces friction and heat buildup, which helps extend bit life. Consequently, users can complete drilling tasks faster while maintaining consistent cutting quality.

Durable Construction for Long Service Life

Built for heavy-duty use, these drill bits resist chipping, cracking, and premature wear. In addition, their strong steel body supports the diamond coating during high-pressure drilling. Therefore, they remain reliable even during continuous professional use.

Smooth and Clean Hole Finishing

The STB Diamond Core drill bits produce smooth, clean-edged holes without rough edges or surface damage. Furthermore, this makes them ideal for delicate installations such as sinks, faucets, and fittings where precision is critical. As a result, finishing work becomes easier and more accurate.

Compatible with Standard Drilling Machines

These core drill bits are designed to work with most standard drilling machines. Moreover, they can be used for both dry and wet drilling (recommended for extended life). This flexibility makes them suitable for home improvement, construction, and professional installation work.

Trusted Quality – Made in India

Manufactured in India, the STB Diamond Core Hole Saw Drill Bits meet strict quality and performance standards. Each bit undergoes inspection to ensure reliable results and consistent performance. Therefore, professionals trust STB Diamond Core for tough drilling applications.

Usage & Safety Tips

For best results, use low speed and light pressure while drilling. However, using water during drilling is recommended to reduce heat and extend bit life. Always wear safety goggles and gloves during operation.

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