The following terms describe the level of durability and longevity a given tool should provide. When a distinction is made using these terms, determine the "worst case" application for which the tool will be used and select the tools accordingly based on categories defined below. LIGHT-DUTY - Occasional Use Designed for limited-duty usage in a nonproduction environment. Use for do-it-yourself projects and car repairs.

GENERAL-DUTY - Daily Use For heavy-duty use in a nonproduction environment such as industrial maintenance repair operations and professional automotive/fleet applications. Use for maintenance shops, light foundry work, quarry and mine maintenance, remanufacturing, light steel fabrication, general equipment, processing plants, retrofitting, construction, utilities, ship and boat repair, power plants, railroad repair, engine and electric motor repair.

INDUSTRIAL-DUTY - Continuous Use The highest durability and performance available for a production, manufacturing, or assembly environment. Use for furniture manufacturing, foundry work, bridge building, lawn equipment manufacturing, aerospace productions, automotive assembly, steel fabrication, ship and boat building, truck manufacturing, appliance production, production/assembly lines, electric motor manufacturing, and farm equipment manufacturing.