04-16-2007, 09:24 PM
theyre called action base
<a href='http://www.hlj.com/hljlist2/?Dis=-2&MacroType=DisplayBse&from=detail&Word=action%20base' target='_blank'>http://www.hlj.com/hljlist2/?Dis=-2&MacroT...d=action%20base</a>
you should at least have one for your most valued model.