American Ground Screw Model 3 hardware The screw has an Inner

The screw has an Inner Diameter of 2-1/2"

American Ground Screw Model 3 - Premium No Dig Ground Anchor - Round Post & Flag Pole Base Ground Mount - Screw in Post Stake

(Fits Round Poles 1” - 2 3/8")

Use the Winding Bar to Create a Pilot Hole in the Ground

Easily Mount Posts up to 2-3/8" OD

American Ground Screw Model 3 hardware The screw has an InnerAmerican Ground Screw Model 3 Premium No Dig Ground Anchor Round Post & Flag Pole Base Ground Mount Screw in Post Stake, 22" Inch Long, (Fits Round Poles 1 2 3 8") Fence Post Anchor Securely Anchor Hefty Steel Poles up to 18" Deep Without Concrete Installs in Minutes and is Immediately Loadable. Includes 3 Finger Screws To Tightly Secure Poles In Place Removable and Reuseable This Large Heavy Duty Ground Screw is Over 21 Inches Long