The Hertel Indexable Threading Toolholder is a precision machining tool designed for external threading applications. This right-hand toolholder features a robust 1 x 1" shank and accommodates 3/8" insert inscribed circle. With a generous 6" overall length, this HSE toolholder provides excellent reach for threading operations while maintaining stability. Part of the HSER series, this toolholder is compatible with 16ER inserts, making it versatile for various threading applications. The durable construction ensures consistent performance in demanding machining environments. This Hertel toolholder (Part #H08700056) is manufactured by MSC Industrial, known for quality cutting tools. Whether you're working on custom threads or standard patterns, this toolholder delivers the precision and reliability needed for professional machining operations.