Crown bits for T38 drill strings. A crown face penetrates fast in softer rock. Diameters from 2-1/2 in (64 mm) to 4 in (102 mm). Hemispherical carbide.
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Thread
T38
Diameter
2-1/2 in (64 mm)
Face
Crown
Carbide
Hemispherical
Button layout
gauge 6 × 7/16 in, mid 3 × 3/8 in, centre 3 × 5/16 in
Flushing holes
1 × 3/8 in front, 3 × 3/8 in side
Weight
3.7 lb (3.75 lb)
Shipping estimate
Used with
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