✅ 8" Roller Cone Hole Opener 8-in (20.3-cm) HOLE OPENER – Built to deliver precision engineered performance, this 8-in (20.3-cm) hole opener is designed to maximize production and cone life. Available in a multi-cone configuration with premium TCI cutters (IADC 637), it provides an effective solution for soft rock, fractured rock, cobble, and hard rock conditions. Configured with a 5.5-in (14-cm) stabilizer, this tool is ideally suited for smaller diameter applications and lower to mid-range HDD rigs. These tools are rebuildable and designed to provide a reliable fit for your job requirements.