P28 4-STONE MANDREL and reliable operation—making it a

and reliable operation—making it a trusted choice for production and repair environments alike

designed for Single Stroke Honing® applications

designed to work in tandem for optimal performance

and maintenance operations

superior bore geometry

P28 4-STONE MANDREL and reliable operation—making it aAchieve exceptional honing precision with the Sunnen 4GP28 Honing Tool, designed for high performance applications requiring accuracy, repeatability, and durability. This tooling ensures optimal abrasive alignment and efficient material removal, delivering superior surface finishes and extended tool life. Ideal for demanding industrial environments, the 4GP28 offers the reliability and performance professionals expect from Sunnen.