The Vermeer 16″ (40.6 cm) T-REX reamer takes a bite out of tough conditions on your horizontal directional drilling job. ✔3.5″ (8.9 cm) API reg box x pin. ✔Ruggedly constructed with work-hardened, high-alloy steel. ✔Unique, steep, rear-tapered design for ease of pushback when needed. ✔Optional built-in swivel or thru-shaft designs are also available. ✔High-wear areas are made to last with a resilient carbide mesh grit hard facing. ✔Equipped with oversized shark teeth tooling for aggressive, yet smooth, cutting action. ✔Ideal HDD tooling for cobble, chunk rock and soft rock.