K3 HARD STEEL MANDREL The Sunnen GNR is a

The Sunnen GNR is a robust

This cartridge is integral to Sunnen's HellerDex system

Ideal for machining aluminum and other non-ferrous materials

Engineered to ensure secure stone retention and consistent pressure

Achieve exceptional honing precision with the Sunnen 4GP28 Honing Tool

K3 HARD STEEL MANDREL The Sunnen GNR is aUnlock superior performance with Sunnen K3 tooling, engineered for high precision honing in demanding production environments. Designed to deliver exceptional accuracy, repeatability, and surface finish, K3 tooling is ideal for a wide range of materials and applications. With enhanced durability and quick change capability, it boosts efficiency while minimizing downtime. Trusted by professionals worldwide, Sunnen K3 tooling is the smart choice for