CV MANDREL ADAPTER OPTION and repeatable accuracy—making it the

and repeatable accuracy—making it the trusted choice in shops worldwide

the 4GP20 offers the reliability and performance professionals expect from Sunnen

Sunnen D6 tooling is the go-to solution for superior bore geometry and repeatable results

diamond-plated sleeves

Ideal for automotive and high-performance engine builders

CV MANDREL ADAPTER OPTION and repeatable accuracy—making it theThe Sunnen CV tooling delivers unmatched precision and consistency for engine builders and machinists demanding top tier results. Engineered for high performance cylinder honing, it ensures optimal surface finish, straightness, and size control with ease. Whether you are working on performance engines or rebuilding stock powertrains, the CV tooling offers fast setup, intuitive operation, and repeatable accuracymaking it the trusted choice in shops