1. Durable and reliable. 2. Plug and play. 3. Connect method: With 4 mm banana plug connection; also direct crimping; 3mm binding post crimping hole; Diameter fo 2 panel holes: 12mm; 19mm hole space; 42mm long, 5mm screw shaft diameter, 19mm pitch; 4. Can be installed on panel within 5mm. 5. Material: alloy + ABS
