I really like the way those bullet truss rods look on some of the Fender Strat necks. I have one that came with one but I also got one that doesn't have it. The one that doesn't have it still has the truss rod adjustment at the nut though so I wondering if I could just buy this from Stewart Macdonald and get instant gratification:
http://www.stewmac.com/shop/Truss_rods/Adjusting_nuts/Fender-style_Bullet_Truss_Rod_Nut.html
http://www.stewmac.com/shop/Truss_rods/Adjusting_nuts/Fender-style_Bullet_Truss_Rod_Nut.html