These are genuine Lee gel filters, cut into a friendly flash strobe size. These gels are the common ones you want for illumination color balancing without all the creative ones you'll never (or very rarely) ever use.
The gel type is actually printed right on the gel strip, so you'll be able to quickly pick the right gel you want.
I've cut up one of the 1/2 CTO gels from this kit and affixed it to my cell phone flash (with a DBrand camera lens skin). Same on my Fuji X100* cameras. Really warms up the skin tones in portraits.