K4 SOFT STEEL MANDREL and surface quality across a

and surface quality across a wide range of materials

and ease of use

The Sunnen A-20 Honing Tooling System is engineered for precision honing of small-diameter bores

making it ideal for both manual and automated applications

Part of Sunnen's A-Series

K4 SOFT STEEL MANDREL and surface quality across aUnlock next level performance with Sunnen K4 tooling, engineered for fast, accurate, and repeatable honing in a wide range of applications. Designed for use with Sunnens industry leading machines, K4 tooling delivers exceptional versatility and tight tolerance control in small diameter bore finishing. Whether you are working in automotive, aerospace, or general machining, the K4 tools ensure consistent surface finishes and extended tool life boosting