These are the Micro K'NEX rods.  Smaller/thinner than standard K'NEX, common on many of the K'NEX Roller Coaster sets.  Main photo shows them compared to the larger K'nex Black & Green rods for comparison (not included).  Excellent clean condition.  These pieces measure just over half an inch in length (~.56").  You will receive 250+ black rods with each lot.

Buy from us with confidence! I am a lifelong avid K'NEX builder.  I know the parts well and have a huge selection.  Please feel free to contact us with any questions, or if we can be of any help finding a specific part for you.  I would be happy to put together custom lots of any part and quantity that we have available.  Thanks for looking!