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Rock Drill Bit Sizes Explained: The Complete DTH Bit Size Guide (With Chart)

Rock drill bit sizes typically range from 2-3/4″ (70mm) to 42″ (1067mm) in diameter, with the correct size determined by three factors: your DTH hammer class, your required borehole diameter, and your application — whether that’s water well drilling, mining, construction, or quarrying. Choosing the wrong size doesn’t just slow the job down. An under-gauge […]

The Importance of Air Pressure in DTH Drilling: How It Affects Performance

Down-the-Hole (DTH) drilling plays a pivotal role across construction, water well, geothermal, mineral exploration, and oil & gas markets. At the heart of it is the DTH Hammer, which uses compressed air to power the entire drilling process. The efficiency of that process is directly and heavily reliant on air pressure — from drilling speed […]

How DTH Hammers Revolutionize Construction Foundations and Water Wells with Drill King International

The Introduction Experience the next level of efficiency in Construction Foundations and Water Wells with Drill King International’s revolutionary DTH hammers. These game-changing tools are transforming the industry, offering unmatched drilling performance and productivity. In DTH drilling, compressed air is injected into the hammer, driving a piston in a high-velocity cycle that delivers rapid, powerful […]

A Texas-born, ISO 9001:2015 certified DTH manufacturer supplying high-performance drilling tools to operators worldwide.
From concept to field validation, our U.S.-based engineers design and custom-build tools for the toughest downhole conditions.
CNC precision machining, Just-In-Time scheduling, and private-label options, with most stock items shipping within 24 hours.
ISO 9001-governed inspection and full serialized traceability let us track every part back to its raw material.
Training, documented procedures, routine equipment checks, and proper PPE are built into every stage of production.

Social Responsibility

Committed to responsible manufacturing that protects our people, supports our communities, and respects the environments where our tools work.

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Construction

Built tough enough for the unpredictability of job sites, our equipment minimizes costly downtime and re-drills.

Exploration

Every hole counts, and our tools are built to keep penetration rates high even in unpredictable, mixed formations.

Mining

Engineered for open-pit and underground alike, our tools lower per-meter drilling costs without sacrificing performance.

Oil & Gas

Engineered for the rigors of well-site conditions, our hammers and bits extend service life while reducing per-foot drilling costs.

Quarrying

Less downtime, fewer bit changes, more material moved. That's the Drill King difference for quarry operators who can't afford to slow down.

Water Well & Geothermal

From residential wells to large-scale geothermal fields, our tools are trusted to get the job done right the first time