The Vermeer 10″ (25.4 cm) Supreamer takes on the big horizontal directional drilling jobs. ✔2.875″ (7.3 cm) API reg box x pin. ✔Open-bodied design and ruggedly large paddles for exceptional mixing action. ✔Front- and rear-facing shark teeth tooling for aggressive cutting action and ease of pushback when needed. ✔Ideal HDD tooling for sandy soil loam, soft soil, medium soil and hard soil.