Ideal for lubrication of steps, slideouts, jack stands, awning hardware, tow bars, locks and electrical connections. Excellent for undercarriage and long term storage. Boeshield T-9 was developed by The Boeing Co. for use on aircraft. Penetrates metal pores and fixtures leaving a waxy film guaranteed to lubricate and protect. It will loosen rusty parts and will not harm paints, plastic, vinyl or rubber.