... an electrical circuit. Used in various applications such as electric power,telecommunication, machinery, marine, textile, printing, miningindustrial equipment , ... durability:momentary 1000,000 maintained:250.000Electrical durability:500,0004.Packing 1pc/white box,20pcs/kraft box,200pcs/ ... 5mm 5.Other modles for reference:flush head,mashroom head,spring return,turn release,turn to stay up, ... dobble ...