Click on a colored part below to see the Sets and MOCs that use part 6538b Technic Axle Connector Ridged [with x Hole x Orientation] in that color. You can find an overview of all LEGO Colors here.
If a color is missing, it probably needs to be added to a Set Inventory.
This part has been used by MOCs in the following colors but not officially released.
There are 3 Mold variations of part 6538b - Technic Axle Connector Ridged [with x Hole x Orientation] in the database, in use between 1996 to 2014. See Molds and other related Parts.