Geo Polycarbonate 24 4 Wheel Spinner Travel Case Polished Gold (PG). Travel in style with the new Zero Halliburton Geo Polycarbonate 24 4 Wheel Spinner Travel Case. Polycarbonate hardside construction, theft-resistant zippers, 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 which provides eff