K4 SOFT STEEL MANDREL Unlock superior performance with Sunnen

Unlock superior performance with Sunnen K20 tooling

Precision meets performance with Sunnen K12 abrasives — engineered for consistent

Fully compatible with BTA and ejector systems and interchangeable with Sandvik T-MAX® 424

and reliable

Built for durability and consistency

K4 SOFT STEEL MANDREL Unlock superior performance with SunnenUnlock 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