The Vermeer 18″ (45.7 cm) fluted reamer is tough, reliable and ready to get your horizontal directional drilling job done for you. ✔Rotary teeth create aggressive cutting action. ✔3.5″ (8.9 cm) API reg box x pin. ✔Robust throughshaft design and heat-treated, cast-alloy steel for durability. ✔Robotically applied, carbide mesh grit hardfacing adds longevity. ✔Ideal HDD tooling for rugged ground conditions ranging from hard pan and soft rock to cobble.