The McConnel BH61255 is a genuine OEM flail mower blade holder designed for McConnel power arm machines. Featuring a 55mm bore diameter, 100mm overall diameter, and 65mm height, this robust blade holder ensures secure attachment of flail blades for efficient cutting performance. It is compatible with a wide range of McConnel PA series models, including PA50, PA51, PA55, PA60, PA65, PA70, PA75, PA80, PA90, PA91, PA93, PA95, PA96, PA97, PA98, PA99, PA600, PA650, PA700, PA750, PA800, PA900, PA9000, PA9500, PA9600, PA9700, PA9800, and PA9900.