Festool 769040 Wrench KF-AG is a reliable wrench designed specifically for the RG 130 Surface Grinder. Commonly referred to as a key, this tool is essential for tightening and loosening the grinder wheel fastening nut or flange, ensuring secure and precise operation. Its versatile design also makes it compatible with the DSC-AGC 18 FH and DSC-AG 125/230 models, providing convenience for users working with multiple tools. Crafted in Germany, this wrench combines quality and durability to meet professional standards. Model Number: 769040