The document describes the features and characteristics of a solid aluminum combination lock called 145 30 Blue C. It is suitable for use with toolboxes, luggage, sports equipment, etc. It features internal and external standard security, 3-wheel resettable combination technology, precision extruded, cut and drilled pure aluminum body, mechanism and shackle coated to prevent chemical corrosion, corrosion resistant anodized coating, 5mm hardened steel shackle, etc.