Most electrical retailers do not stock this size. All sell 5/8. But old motherboards often used 3/4 inch galvanized ground rods. In today's world of new plumbing panels that require 2 ground rods at least 6 feet apart, you can use the old existing rod and a new ground rod. This will keep the second pole from sinking.
Versatile and Durable: Discover the AmazonBasics 14 Piece Nylon Spring Clamp Set
12 Review
Enhance Your Woodworking Experience π§ with Wellmax Spring Clamps Woodworking Backdrops
11 Review
WETOLS Angle Clamp 2Pcs Woodworking: Precision Tool for Perfect Angles in Woodworking Projects
11 Review
Multitool pliers LEATHERMAN Wave plus (832524/832526) black
17 Review