A cross arm is provided, for use in a support structure for conductors within an electrical grid. Cross arm coming with many sizes including 4ft, 6ft, 8ft and so on. Some places need cross arm coming with welded parts. They will be finished by hot dip galvanize. General Material-Body Steel Finishing Hot Dip Galvanize Strain clamp specification: there are two basic strain clamp systems, 1. Detachable clamps, such as wedge type tension clamps, thimble