This is a 6 pack of Lightweight aluminum M3 lock nuts with no flange. These lock nuts replace the recessed nuts on popular 2wd/4wd buggy hubs/castor blocks. These nuts are anodized so choose your favorite color in the drop down menu. 

• Part # 17510 17511 17512 17513 17514 17515 17516 17517 17518 17519