Skirt Design - Boart Longyear

Skirt Design
Our button bit skirt designs can be split into two categories: Retrac and Straightrac.
Retrac		Straightrac

	Retrac The Retrac skirt features an extended body, with cutting edges or ribs designed into the skirt. This design ensures easy removal and completion of the bit in adverse ground conditions.

	Straightrac The Straightrac skirt features an angled flute design with an extended skirt body that maintains 360° contact in the hole. The Straightrac design has been field tested and proven to provide straight holes in even the most adverse ground conditions.