Not sure what your confused about but if it's what strata will work on the shockwave, it is the universal version that will have male 510 threads on the bottom, it will also work on other 510 pv's that you might have as well. If you have questions just read the last 5 pages or so.I am getting a shockwave...hope David tells us when these are going to be ready and what exactly to order as it's late and I am confused.