Ninth-City 2Pcs Adjustable Car Auto Trunk Alarm Security Hood Door Pin Switchs (with a Small Box Opener) door spring tool Material: Iron, Plastic,door Spring tool door plunger switch 12v Length: 70mm / 2.75" door spring tool Screw length: 35mm / 1.37" Hood Trunk Door Pin Uses: Car hood intrusion switch / auto switch trunk notice Door plunger switch viper alarm Auto hood pin Adjustbale Screw Length.