First of all and maybe most importantly, I cannot take credit for this contraption as the idea came to me from my friend and mentor Wes Ferguson. I bought the original spike from him, then improved on it somewhat. To my knowledge, there are only two like this in existence, and I had a hand in building both of them. Anyone with a welder and some basic metalworking skills can make one of these. The trick is to make sure it is balanced properly to handle large bales.