1、DIMENSION INFORMATION: Antenna ground anchor is machined by CNC lathe. The outer diameter is 12mm, the tip is 45mm long, the thread is M10x12mm, and the total length is 240mm. The tip is more secure when is rounded 2、DURABLE MATERIAL: The vertical antenna ground anchor is made of aluminum alloy with light weight and possess good strength and good erosion resistance 3、SOLID AND STABLE: Ground anchor can be used for short wave vertical antennas such as pac 12, ma 12 and gp20, which are firmly inserted into the ground. In order to ensure the electrical conductivity of the ground anchor, the surface is not treated 4、ENHANCED PERFORMANCE: Antenna ground anchor offer optimal signal reception and transmission thanks to low standing wave ratio(SWR) and efficient design 5、RELIABLE AND EFFICIENT: Whether you're an experienced amateur radio enthusiast or a beginner, this antenna anchor deliver reliable performance and increased efficiency