I usually let the pictures speak for themselves but this wood requires a more extensive description.
Some of these sets (backs) have a burly figure that includes some inclusions or cavities that will need a small amount of attention. The outside few Inches of the log these came from has very strong figure and further inside the log is less figure and much straighter grain.
You should be able to enlarge the images.
I think you can buy these ( 8 total) with confidence that you will end up with a gorgeous one of a kind Curly Koa ukulele.
As always you can always return for a full refund.
Top and back are: 51/2” wide by 13 1/2” long
Sides are: 4” by 20” long.