Premium Tungsten Carbide Insert (TCI) tricone bit engineered for extreme hard rock formations with 6 3/8" industry-standard diameter. Three sealed bearing cones rotate independently for optimal drilling efficiency in granite, basalt, and metamorphic layers. High-density alloy steel body with precision-machined threads ensures perfect rig compatibility. Advanced pressure compensation system protects internal components from abrasive debris. Ideal for water well drilling, mining exploration, and geothermal projects requiring extended bit life. Heat-treated cone shells with reinforced teeth pattern deliver 30% faster penetration rates than standard bits. Direct manufacturer pricing with bulk order discounts for drilling contractors. Worldwide shipping with guaranteed lowest wholesale rates for industrial buyers.