When I bust it in half you will be able to see if the rod goes all the way Thru. I have learned a lot with the koma. Mine does all the tricks I can do. I used a tip like James, and got a 65 foot wire walker, (good enough) now I've put a plastic cap on it and I just hit a four inch target at 20 feet. I was going to hallow it out, but this is the BEST figting top I have now. I want another one. You should fight with two tops. Fighting with big tops, and long lines is so much fun. I hope more people buy a Koma, ant try it.