2.25" Expandable Rock Anchor, 1" Diameter Anchor Rod, 30" Length, Triple Eye, For Guying Utility Poles There are many types of anchors to use when guying poles, such as Expandable/Bust Anchors, Crossplate Anchors, Helix or Power Installed Screw Anchors, Manta Ray Anchors and Expandable Rock Anchors. Anchors Come in a variety of different lengths, diameters and holding strengths to fit your specific need