Steel tooth tricone bits—also known as milled tooth or mill tooth tricone bits—are designed for drilling soft to medium formations. The teeth are precision-machined from high-grade alloy steel and hard-faced with tungsten carbide to enhance wear resistance and durability.

Commonly used in shallow sections of deep well drilling, the 17 1/2″ size is a standard first-hole diameter worldwide due to its efficiency in softer formations. These bits offer reliable performance, effective cutting action, and are widely trusted for their versatility in oil, gas, water well, and geotechnical drilling.