These wing nuts are threaded nuts with wings on opposite sides of the body intended for manual turning. Quick and easy assembly by hand. Commonly used in applications where the fastener is often adjusted or frequently removed.
Assortment of the most popular 7 metric sizes, 100 total pieces kept in a convenient re-sealable plastic case. 
With thread size: M3/M4/M5/M6/M8/M10/M12.