These generic Intersystem Bonding Bridges save 50%. These aluminum alloy bridges are designed with NEC compliance in mind. NEC 250.94 requires a minimum of 3 connection points, be accessible and not intefer with the opening of the meter or disconnecting means. These lightweight bridges meet the need at an affordable price. They are 3 1/2" long, 5/8" thick, and 7/8" tall. The wire range is from #14 to #4 so they will fit most electrical grounding conductors and accomodate low voltage wires. There are 2 mounting holes for ease of installation. The screws are 1/4 - 20 stainless steel to prevent corrossion and make secure electrical connections. Additional Details ------------------------------ Product description: These generic Intersystem Bonding Bridges save 50%. These aluminum alloy bridges are designed with NEC compliance in mind. NEC 250.94 requires a minimum of 3 connection points, be accessible and not intefer with the opening of the meter or disconnecting means. These lightweight bridges meet the need at an affordable price. They are 3 1/2" long, 5/8" thick, and 7/8" tall. The wire range is from #14 to #4 so they will fit most electrical grounding conductors and accomodate low voltage wires. There are 2 mounting holes for ease of installation. The screws are 1/4 - 20 stainless steel to prevent corrossion and make secure electrical connections.