Flat face retrac bits for T51 drill strings. A flat face suits hard and abrasive rock. Retrac skirts help in broken ground, keep holes straighter and make the bit easier to retrieve. Diameters from 3-1/2 in (89 mm) to 5 in (127 mm). Hemispherical carbide.
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Thread
T51
Diameter
3-1/2 in (89 mm)
Face
Flat face, retrac
Carbide
Hemispherical
Button layout
gauge 8 × 1/2 in, mid 6 × 7/16 in
Flushing holes
2 × 1/2 in front, 2 × 3/8 in side
Weight
10.6 lb (10.58 lb)
Shipping estimate
Used with
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