Model 90 3-point hitch post hole digger for most compact, Category 0 tractors. Fast post hole digging with convenient, safe operation from the tractor seat. Heavy duty gear box and driveline. Quick connect to 6 spline PTO. Light duty rating. Carbide, replaceable cutting edge. Spiral tip point included. 6″, 9″ and 12″ augers available. Width of the top link on the 3 point hitch: 1 5/8”. Top Link Pin Diameter: 5/8″. Left Arm Pin Diameter: 5/8″.