I just bought a Daiwa Tatula CT and the handle is 90mm so I was wondering if anyone has a longer handle for it that might trade for my 90mm

Aliexpress.  Search "reel handle."  1,000,000 results.  I like this one in 95mm for the knobs.

Before you run off, think about gear ratio.  

I find 90-mm Perfect for 7.1 gearing.  

On 8.5 gearing, I'll go up to 100 mm.  

On 6.3 gearing, I'm totally happy with 82-86 mm.  

 

If you go to too long handle on a lower-geared reel, you may not be able to keep up with charging fish.  

15 hours ago, Bigbox99 said:

Aliexpress

Wow, this used to be a censored term here. I guess it changed.

Search "heighten handle" over there; their carbon handles are good quality and light.