These are high-performance Tricone Drill Bits 5 5/8, designed for penetrating tough rock formations in oil, gas, and geological drilling. Each bit features three rotating cones with milled teeth or tungsten carbide inserts, engineered to crush and break rock efficiently. The bits come with threaded connections for easy attachment to drill strings. Ideal for professionals in petroleum engineering, mining, or construction. Available in various conditions – from lightly used to well-worn – depending on your budget and drilling needs.