Tungsten
carbide insert bits for very soft formations
Long intervals of very soft poorly compacted shales, sandstones,
clays, salts and soft limestones.
Very long widely spaced, chisel-shaped inserts and considerable
cone axis offset against center line of bit ensure very
high penetration rate. To secure the bit from diameter
loss, the gage protection inserts have got shorter lenght
and greater angle of the top.
