Dressing and truing tools keep grinding wheels square, sharp, and clean. Grinding wheels wear down and become loaded with contaminants as they're used. Dressing cleans the wheel and exposes fresh abrasive. Truing changes the shape of the wheel to create a round, concentric wheel, and smooths grooves and other wear caused by grinding. All precision wheels should be trued when they are first installed in a grinder. Cutter dressers dress and true simultaneously. Dressing sticks remove buildup and expose fresh, sharp abrasive to improve cutting efficiency and quality. Diamond dressers are very hard and long lasting, and can be mounted in a tool or handheld. Dressing and truing devices hold dressing wheels and dressers when precision dressing and truing is needed. Dressing and truing wheels install in dressing and truing devices.