4 Black Lego 32173 Star Wars Mindstorms Bionicle  leg arm 4 Technic ball joints 

Lego Part number: 32173
Description: Technic Ball Joint 2 x 7 with 2 Ball Joint
Qty: 4 pieces
Color: Black

Dimensions: 6.5 by 3 by 1.3 in studs (5.11 by 2.5 by 1.03 centimeters)
These pieces (32173), in all colors, were originally used in 56 different Lego sets. Themes included: Bionicle, Hero Factory, Technic, Star Wars Mindstorms, and Atlantis. These pieces were manufactured from 1999 to 2010.

The parts you see in the photos are exactly what you will be receiving.
WYSIWYG (What You See Is What You Get) as the youngins' like to say. Feel free to zoom in on the photo for additional authenticity verification.

Particularly useful for a MOC build. 
There so many possibilities. You can build it, yes you can!

This listing does qualify for the multi-item bulk purchase discount.

Smoke free home.

All proceeds go toward purchasing groceries for my family of five during these challenging financial times.

Shipping is free to you via USPS First Class Mail. I will pay all of the shipping costs. You will also receive a tracking number to go along with your bubble mailer padded package.

Thanks so much for stopping by.

Stock Code 32173