Calls only . I have a 20 inch and a 24 inch auger bit . They both have a 2 9/16 round attachment point . Should fit many skidsteers and some heavy duty tractor post hole diggers . Ill take $300.00 cash on the small one and $350.00 cash on the larger one . Calls only please , I cannot receive text or email . thanks......Seventysixfive . ++++twozeroeight . and oo27