This is a small review for MAIDENS JAPAN'S custom hammers for any version of the G1 mold Frenzy Rumble cassettes. Also comes with custom G1 Soundwave Head! When this custom was first seen in the radicons it created a huge buzz and a big demand for MAIDEN JAPAN to produce more sets. Long story short, he has and is only making 100 sets that are individually numbered. The quality and paint job are simply amazing. The hammers fit nice and snug and do not fall off. The pistons can move up and down and will pretty much stay in place where ever you want them. This outside of all the third party add-ons has to be one of my favorites and best out there. This is one neat little add-on that has been long over due and I thank MAIDEN JAPAN for taking the time and offering this to the fans. On to the pics!!!!! The hammers come sealed in a little baggy with a custom logo banner that shows Frenzy on one side and Rumble on the other. One side has a hand written number out of 100. Mine is 03/100: Here is a shot of both with the hammers attached and the new Soundwave head, which is painted silver and not white like some of MAIDEN JAPANS early versions, the head can also fold back in for transformation: And a shot of each Frenzy and Rumble with the hammers attached: Back shot so you can see how they are simply attached: Now that we have there is a super cool upgrade set with the hammers, the only thing alcking is better articulation on the cassettes to get them in some sweet poses. But the hammers alone make for a nice edition to a more G1 accurate version and some added bad-ass-ery!!!