Catalog: Parts: Technic, Connector: 68888: Color Images
Technic, Axle Connector Hub with 4 Bars and Through Axle Hole
Dark Bluish Gray
by Hygrotus
Reddish Brown
by Hygrotus

Part Color Codes:

 Color  Code  By 
 Dark Bluish Gray  6316692  1  Hygrotus 
 Reddish Brown  6316697  1  Hygrotus