The Tungaloy America right-hand ADQN replaceable-insert external toolholder accepts Tungaloy DN series 55-degree rhombic inserts with a negative rake (sold separately) for external turning and profiling. It is made from steel for strength. The cutter is mounted to a machine with a double-clamp system that provides rigidity.

Turning toolholders are tools that hold an indexable insert designed for turning operations. Indexable inserts have multiple cutting edges that can be rotated when one edge wears down and can be replaced when the cutting edges are worn.

Tungaloy America, Inc. manufactures tools for turning, milling, and drilling. The company is part of the Tungaloy Corporation, which was established in 1934 and is headquartered in Fukushima, Japan.