Climbing features: These small holds will please those who love focusing their strength at the very edge of their fingers. You can use them for pull-up moves in intermediate to advanced levels. You may set them pair-to-pair to work on compression moves. You could also pair them while leaving only a small gap between them, in order to turn them as a small crack. Last but not least, why not use them as reverse grips to increase the challenge ?
Aesthetics: Being the smallest size of this collection, their look is extrapolated from the lill-lill boomerangs.