Underreaming Tool

In situations where the driller must drill and install casing at the same time to prevent overburden material from collapsing on the drill string, Drillmaster International offers the Drilldex Underreaming System. The pilot bit, reamer and guide device are designed to work together to help resolve these problem hole conditions. Special sizes for heavy wall casing and for special construction projects are available. Drillmaster International, Card No. 279