Concave Mill

Concave mills (also known as cone busters) are designed to help keep bit cones or loose  junk centered under the mill. Another application of this product is to be used to mill off the top of a fish in the wellbore. The mills can be dressed with standard crushed carbide, starbide, piranha chip and with additional cutting chips. These mills can be dressed with a smooth or rough carbide application to the outside diameter (OD).

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