09 Ago 6-1/4″ DTH Bit QL 60 Concave Face, Spherical Buttons, 3 Air Holes & Foot Valve
Gauge Buttons: 9 @ 18mm Spherical. Rib (or Bead) O.D.: 3.625 in. Foot Valve: 1.81 in. O.D. x 2 in. L (exposed). Face Buttons: 8 @ 16mm Sperical. Neck O.D. : 3.35 in. Cut Dia: 6.25 in (159mm)....