new and high quality. Heavy duty fixed key battery isolator switch. Copper terminals M10 thread. Perfect for Marine, Commercial & Heavy Plant Use. Helps prevent battery drain when storing repairing cars/trucks./Auto/Vehicle Name: Rotary switch Types: F Type Color: red + silver + black Material: plastic+alloy Screw diameter: 10mm Chassis circle diameter: 68mm Voltage: 12-60V Rated current: 300A Max current: 1000A. Package included: 1 x battery switch Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.