The material is high-quality, high-purity aluminum, an original product processed from pure solid flat plates. In terms of electrical resistance alone, aluminum ranks after silver, copper, and gold, and is superior in electrical conductivity to copper and gold. The resistance values of gold and aluminum are almost the same. Aluminum's resistance is about 1.5 times that of copper. Since aluminum is lighter than copper, it conducts more than twice as much electricity as copper when compared by the same weight. "Doesn't aluminum not conduct electricity??" It conducts electricity because it's a metal. Aluminum is an element, so it will not conduct electricity if it has impurities, surface treatments, anodizing, or Alpina treatment. Aluminum is also used inside capacitors. ~Accessories & Specs~ Part Number: F5TBC 5-hole M6 specification with ball bearings. Not tapped. *The mounting part is also an M6 hole. SUS cap bolt nuts x 5 *Will not rust BT mounting flange nut x 1 This product is made with the assumption that it will be used exclusively for grounding in an earthing tune. The battery mounting part and the plate are independent, so It can be installed in various styles. *Recommended mounting terminals: 8 gauge to 4 gauge As this is an original processed product, please understand that there may be processing scratches, scuffs, slight dimensional errors, and distortions. We do not accept price negotiations. We do not ship on weekends and holidays. Shipping dates will follow the app. #PowerCable #FlatBraidCopperWire #EarthingKit #EarthingTerminal #IgnitionEarthing #DischargeTerminal #MachinoEarthingShop