Max Round Auto Fuse. Great for low voltage LED Lighting, inverters, amplifiers or solar applications. This product measures approximately 3.32 inches by 1.60 inches. 0.175" approximate mounting hole diameter. Approximate 1.25" hole to hole spacing. Approximately holds fuses approximately 0.4" diameter. Approximately holds a fuse 1.5" long. Approximately holds wire approximate diameter from 0.2" to 0.4". Has weather proofing gasket rings to help keep the fuse and wires dry. Has a set screw to tightened the wires or wire crimps. Has a key to keep the fuse from spinning.