Reduce tooling setup time—install the holder once and alternate between applications by switching out the bit. Once the holder has been aligned with the centerline of the lathe, the locking system ensures alignment repeatability from tool to tool.

Install these inserts into a matching holder to cut external or internal threads on a workpiece. They are compatible with top-notch style threading and grooving systems, which use a highly-rigid clamping design, resulting in a smoother finish and superior tool life. When the first point dulls, flip the insert to use the second point.

Pair a right-hand insert with a right-hand external holder or a left-hand internal holder.

Pair a left-hand insert with a left-hand external holder or a right-hand internal holder.

Pair these holders with a threading insert or a grooving insert to make cuts on the inside of a hollow workpiece. A highly-rigid clamping design results in a smoother finish and superior tool life. They are compatible with top-notch style threading and grooving systems.

Use a right-hand internal holder with a left-hand insert when the workpiece is rotating counterclockwise (toward the lathe operator).

Use a left-hand internal holder with a right-hand insert when the workpiece is rotating clockwise (away from the lathe operator).

These tools come with one high-speed steel insert for use on steel and stainless steel and one high-speed steel insert for use on softer materials, such as aluminum and brass. When one point of an insert dulls, rotate it to use a sharp point. When all points dull, replace the insert rather than the whole tool.

Tool with 1/2" shank can cut external right-hand threads with one end and internal right-hand threads with the other.