Drop centre retrac bits for GT60 drill strings. A drop centre drills straighter holes in medium to hard rock. Retrac skirts help in broken ground, keep holes straighter and make the bit easier to retrieve. Diameters from 3-11/16 in (93 mm) to 6 in (152 mm). Hemispherical, semi-ballistic or conical carbide.
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Thread
GT60
Diameter
3-11/16 in (93 mm)
Face
Drop centre, retrac
Carbide
Hemispherical
Button layout
gauge 8 × 1/2 in, front 4 × 1/2 in
Flushing holes
5 front
OEM catalogue number
A44278
Shipping estimate
Used with
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