Lightsaber Hilt.

Based on this image:
http://img195.imageshack.us/img195/4501/saberbuilderrender2.png
From this website: http://www.thecustomsabershop.com/

Final Render:
http://img23.imageshack.us/img23/807/finalrendert.th.jpg

Other Renders:
http://img158.imageshack.us/img158/2373/saberhiltv4.th.jpg
http://img6.imageshack.us/img6/4821/saberhiltv3.th.jpg
http://img9.imageshack.us/img9/1381/saberwithblade.th.jpg
http://img26.imageshack.us/img26/2439/justthehilt.th.jpg
http://img26.imageshack.us/img26/4793/saberhilt.th.jpg