The Vermeer 2.875-in (7.3-cm) API Armor Gauntlet rock tooling bit assembly includes Gauntlet bit, two sets of medium formation teeth, one retention pin, two o-rings and two cap screws. ✔5.5-in (14-cm). ✔Ideal HDD tooling for soft to medium rock, shale and caliche ground conditions up to 10,000 psi (68,947.6 kPA) with exceptional steering capabilities. ✔Carbide buttons are strategically placed on the bit for optimum cutting. ✔Carbide hard facing helps to enhance wear and performance characteristics. ✔Replaceable three-tooth design delivers a consistent cutting structure for steering corrections and maximum drilling performance.