DOP92-152 Gravely 66" Cut Mower Blade No. 00360200. You need three blades. The length is 22 1/2", the center hole is 5/8", the width is 2.50" and the thickness is .250". This blade fits the Pro Master 260M, 266H, and the Pro Turn 266, 266H, and 466. Replaces part number 00360200.
{Blades are sold individually}