Miniature robotic hands could be marketed

Hobbyist BloodKeith from China came up with this pair of magnificent miniature robotic hands which will be part of his line of upcoming TK humanoid robots, where he is toying with the idea of selling his creation sometime in the future. These hands are able to grasp cylindrical objects, and hopefully can tell the object it is holding since carrying around an egg requires a whole lot less energy and pressure compared to toting a mug of beer around. Each finger measures 7cm in length, and we wonder whether it is fast enough to capture and crush a fly in mid-flight. Could these also be a murder weapon of choice in the future?