Here’s a Karakal squash rackets rundown. This is their 2014 – 2015 range. I have never tried Karakal squash rackets myself, but I was able to cull this info from their 2014 catalog.
First you have the “S” series of rackets, the Karakal SN-90, Karakal SX-100, and Karakal ST-110. They’re all teardrop-shaped, with a fan stringing pattern, and a small head size (455 sq. cm.). As an example, here’s the SN 90, which Karakal by the way says is the lightest squash racket in the world:
After that you have the XL TEC series, which includes the Karakal XL-TEC 125, Karakal XL-TEC 140, and Karakal XL-TEC 150. These are also teardrop-shaped but have a regular stringing pattern and a medium head size (480 sq. cm.). Here’s an example, the XL-TEC 125:
And finally there’s the Karakal V Series, including the Karakal V-Ti 125, Karakal V-GT 135 and Karakal V-GR 150. These are also teardrop and medium head size (480 sq. cm.). Honestly I’m not sure how these are different from the XL TEC series.
That’s it for now, may add some more to this over time.