4 Hole Quad Shaped Busbar ConnectorLink Together XD Single, Dual, and Triple XD Relays to multiple sealed fuse blocks or link fuse blocks together for compact installation.Tin-Plated Copper to ensure reliable circuit connectivity and anti-corrosive features keep it last long term.Specifications:Continuous Current (Amps): 500Max Voltage (Vdc): 72Material: Tin Plated CopperSize: 90mm x 90mmThickness: 2.8 mm (1/8″)Terminal Stud Hole Size: 10.5mm (3/8″)