VEHICLE SAFETY TOOL: Car safety escape tool - window breaking device – Wristband Bracelet offers the capability to break tempered safety glass EASY TO CARRY: This tool is lightweight and fully adjustable design, made of an elastic rubber band and a tungsten striker bead. it can make it effortless to break tempered glass MULTI-PURPOSE: Equipped with tungsten impact beads for window escape, and advanced handcuff key (AHK3) for opening other safety function handcuffs Cool Gift: This is the best gift for your loved ones, friends with cars, and car enthusiasts. It can help you in case of accidents PLEASE NOTE: Bracelet window breaker effective only against tempered glass commonly used in side windows, does not work on car windshields Comes with Tungsten Striker Bead for window escape PLUS Advanced Handcuff Key (AHK3) for opening handcuffs