The ReedHycalog® TuffDuty Directional series of roller cone bits combines the features of the TuffDuty™ products with unique cutting structure features designed to address the rigors of drilling on a steerable assembly.

When a steerable assembly is rotated, the bit is subject to off center rotation, which can lead to tracking and kerfwear, as well as high side loading. These conditions can reduce bearing life and damage the gauge and shirttail areas of the bit. TuffDuty Directional bits specifically address off center wear with features such as KerfStop, progressive skip spacing, enlarged nose insert, and WideCut. These features are designed to significantly reduce cutting structure damage resulting from kerf build-up.

Specially designed wedge-crested inserts add additional tungsten carbide where it is needed most. KerfStop insert's wedge shape provide more carbide on the outer wear surface of the insert resisting wear without sacrificing rate of penetration.

Presenting a wide cutting path to the formation is one way of overcoming kerf build up. WideCut strategically staggers the main row of insert for a wider insert cutting path to the formation.

ArmorClad II, a high performance, abrasion resistant, multiphase hard facing provides additional durability resulting in increased wear resistance for TuffDuty Directional milled tooth bits.