Originally Posted by
metalnut
I don't want to rip on Tamiya, but this is a strategic business plan. Just like TCS, it ensures that you buy Tamiya, lots of Tamiya and only Tamiya. A lot of people may not realize that they can switch to the more standard imperial spurs/pinions, so they keep buying Tamiya ones. The company hasn't been around this long without smart people at the helm.
64pitch and 0.4 mod are very similar and I use both together with no issues. Although 0.6 mod is bonkers