4.25-in (10.8-cm) CENTRALIZER SUB – Built to deliver precision engineered performance, this 4.25-in (10.8-cm) centralizer sub is designed to improve borehole alignment and tool string stability. The compact OD configuration allows for smooth passage through tighter boreholes while maintaining effective centralization. Designed with standard API Reg connections, this tool integrates easily into existing drill strings. Its durable construction provides reliable performance in a wide range of HDD applications and is suited for smaller rigs and tighter diameter bores.