I think it is based on sales. I have a bunch of his products including a couple of the the slide out tools. When he took pre-orders there was always a much bigger demand for the dual prong. I had to wait longer to get a single putting for my slide-out tool from him. Hopefully he makes a single prong for this as well as I also want one!!I was actually thinking about this like 20 minutes ago and wondering if that is his reasoning…then I thought you could stab someone just as easily with the two prongs. I actually asked him a while back and he didn’t dismiss the idea. He just had other priorities like getting the cheaper version out. So maybe it’s worth asking him again about single prong options.