“I bought this wedge mainly for the head. I have used the exact club for the past two years, but mine had a graphite shaft. So I purchased this one so that I could swap the head from the steel shaft and put it on the graphite shaft. I've used it for three rounds and it performs exactly as the old one did...awesome. I'm not sure what the RTX6 Zipcore is like, but this one is tops for me.”