The Hertel Indexable Threading Toolholder is a precision machining tool designed for internal threading operations. This right-hand toolholder features a 3/4" shank and accommodates workpieces with a minimum bore diameter of 0.9". With an overall length of 7", this HSI series toolholder (HSIR) provides excellent reach for internal threading applications. Compatible with 16IR inserts with a 3/8" inscribed circle, this toolholder delivers consistent threading results in various materials. The robust construction ensures stability during operation, reducing vibration and improving thread quality. Manufactured by MSC Industrial under the Hertel brand, this professional-grade toolholder (Part #H08700205) is ideal for machine shops, manufacturing facilities, and maintenance operations requiring precise internal threading capabilities. The toolholder's design allows for quick insert indexing, minimizing downtime and maximizing productivity in threading operations.