The Dirty Hands Tools Model 100 Postal Auger is the perfect choice for Category 1 and 2 tractors. This auger offers fast post hole digging with convenient and safe operation from the tractor seat. It features a heavy duty gear box and drive-line, quick connect to 6 spline PTO, and a standard duty rating. Additionally, it comes with a carbide, replaceable cutting edge, and a spiral tip point included. The Top Link Pin Diameter is 3/4″, and the Lift Arm Pin Diameter is 7/8″.