Drop centre bits for R35 drill strings. A drop centre drills straighter holes in medium to hard rock. Diameter 2-1/2 in (64 mm). Hemispherical carbide.
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Thread
R35
Diameter
2-1/2 in (64 mm)
Face
Drop centre
Carbide
Hemispherical
Button layout
gauge 6 × 7/16 in, centre 3 × 3/8 in
Flushing holes
3 × 15/32 in front
Weight
2.4 lb (2.43 lb)
Shipping estimate
Used with
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