Part:4730
From Brickipedia, the LEGO Wiki
Revision as of 14:11, 8 January 2010 by wikia>LcawteBot (Robot: Cosmetic changes)
The The 2X2 Pin Brick is a common brick for Technic sets. These only have one pin that can attach to any hole. Almost all colours are accessable, but the most common are black and blue.