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Powered cut-out tools handle most of a windshield removal, and every shop still keeps hand tools within reach. Manual knives go where a reciprocating blade cannot: tight corners, encapsulated glass, vehicles where the pinchweld leaves no clearance, and the jobs where a technician wants to feel the resistance rather than hear it. GT Tools stocks four kinds of manual cutter, and they are not interchangeable. Cold knives push. Long knives reach. Pull knives draw a cable through the bead. The Quarter Cutter is driven by hand or struck. This guide covers what each one does, what GT stocks in each family, and the order most shops buy them in.