Geo Aluminum 30 4 Wheel Spinner Travel Case Silver. Travel in luxury with the new Zero Halliburton Geo Aluminum 30 4 Wheel Spinner Travel Case. Constructed with a tough aluminum shell, custom designed draw-bolt latches as well as a three digit TSA approved combination lock, this case will protect your valuables around the globe. Four wheel spinner design constructed with sealed ball bearings as well as a multi stage retractable handle that prov