Use this washers to give your aircraft a nice clean look. And add color to your aircraft too. 
High quality cap bolt washers. Available in two sizes that can fit M3/ #4-40 threads or M4/#8-32 threads 
Choose from Red, Blue, Gold, and Black! 
Sold in packs of 10                                                                                                  
Material: aluminium 6061-T6 (anodized)
Out Side diameter: 12.0mm
Inside diameter: 4.5mm 
Bolt: M4, #8-32
 
Note: These products are out of stock in US warehouse temporarily, please don't choose US warehouse shipping.