Feature●The quick-release nut secures the tool securely on the angle grinder with its counterpart clamping flange BF-AGC●Completely tool-free, it can be released quickly and easily and ensures a quick tool change●Compatible with Festool AGC 18 Grinder●M14 thread, 5/8" diameter●Front clamping flange●sanders clamped without using toolsDescription A Keyless Flange Nut QRN-AGC 18 5/8" for use with the Festool AGC 18 Cordless Angle Grinder. This front clamping flange secures sanders without using tools. Used with discs 4.5"-5" in diameter.