1. WIDELY USED. Bolt Joint Clamp provide electrical connection. Could pass types of fence wires, jumper wire or underground cables, Wire Dia up to 3.5mm / 0.14 inch much wider than normal products in market. Ideal for broken wire no need to replace your fence wire. 2. EASY TO USE. Let wires through Bolt hole, Put on the gasket, Tighten the nut. Washer will keep wires tightly under clamp's head. The hex nut is easy to clamp and not easy to fall off your fence after tightening. 3. LONG LASTING. Galvanized bolt and stainless steel nut have good conductivity and rust resistance with long using life. Suitable for coastal or other worse environments, 4. HUMANIZED DESIGN. Notched design and the washer+nut enable strong grip. When tighten, clamp's head has 2 smooth edges, easy to clamp by wrench. Ribs on bolt enable nut don't move when under tension. 5. WARRANTY 6 MONTHS, If Quality Problems, A full refund or a new replacement can be arranged in warranty. Any problem please contact me. Please kindly advise free for your concerns