Mastrant Rope Guying Earth Anchors are perfect for guying small portable masts and vertical antennas and make an ideal accessory to secure the Mastrant Guying Kits . Weighing only 125g (0.28 lb.), they are lightweight and ideal for portable operation, or expedition activities. Designed for use with ropes, they help you build a custom guying system for your portable mast or vertical antenna. Made from high-quality lightweight aluminum, these earth anchors feature a 0.28in. (7mm) anchor hole to securely attach rope, carabiner, or chain link coupler .