Internal silver contact stopper, ensuring good electrical conductivity. Non-slip design of the shell, ensuring stability and reliability during use. High-quality thickened spring, to deformation and offering a longer service life. Aluminum alloy casing, providing high structural strength and strong resistance to . Adjustable mechanical memory structure, sensitive to large currents, with additional features combined for enhanced performance., Weight: 1.4109584768 pounds, Manufacturer: Ehwisbe