Traditional Nigiribasami snips. Ever eaten an onigiri? (rice balls, sometimes wrapped in seaweed, normally with something inside, like salmon.) Well, an onigiri is so called becuse it's squeezed into shape in the palm of your hand, and these little beauties are so called because...you squeeze them in the palm of your hand. Nigiri = to squeeze.
Bonsai folk use these for ultra small-scale pruning, but actually they're designed for sewing work; cutting and unpicking thread.