The Stress Oil Rig Stress lifts away your tension and secures your investments. Oil tower stress relievers may give your image the lift it needs to really make a name for itself! Slick marketing techniques may work well in some cases, but you also need a quality promo item to keep your name in front of customers on a regular basis. Oil Derrick Stress Balls could overhaul your strategies without making a mess of everything you've worked hard to preserve. Made from soft, squeezable foam, these oil towers should always be close by to relieve your worries.