Copper Steel Composite Material One copper cable extension bolt connector is included. 10 AWG annealed solid copper ground wire with steel core for greater tensile strength , great grounding conductor for electric fence,residential lightning protection and DIY usages. The Soft ANNEALED wire can bear winding and bending ,specially designed for satellite antenna electrical surge ground protection earth wire Customer Service:If you have any problem with our product,please contact us when you feel free,we will reply it in 24 hours and try our best to solve it.