hey all, looking to find a glass breaker or carbide tip I can add to my existing keybar so I always have it handy. I want it to be about as thick as a key or 2, and be able to swing in and out of the bar like the keys do. I've carried knives and pens with breaker tips and always end up getting stabbed with them. Not looking to add much bulk to what I already have. I have real glass breakers in my car and truck. Which helped because I've needed to use them. This tool would be a escape through a work window or open a car with baby in it as I'm walking by type tool.