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OTC's 4497A is a heavy-gauge steel crimping tool designed for insulated wire terminal sizes commonly found on cars, trucks, SUVs, Motorcycles, ATVs, and more. The ratcheting action crimps terminals to correct tightness on the wire making crimping fast and easy. Insulated handles with compound mechanical leverage for power. Use with wire sizes: AWG 22-18 (0.6 mm -1.0 mm) red terminals; AWG 16-14 (1.3 mm - 1.6 mm) blue terminals; AWG 12-10 (2.0 mm -2.6 mm) yellow terminals. High-grade materials ensure quality performance over the lifetime of the tool. Value is at the core of the OTC tool and equipment portfolio. Whether it’s a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it’s a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians’ productivity and shop profits.