The Carlyle Ratcheting Wrenches are designed to deliver maximum performance required by technicians, according to the company. The ratchet mechanism provides a 4-degree swing arc with its 90-tooth count gearing. This provides the technician performance in confined spaces, while still providing strength due to the six-point ratcheting end design. Carlyle ratcheting wrenches also feature an anti-slip design which will grab fasteners that are rounded up to 50 percent. Available in Metric and SAE, the Carlyle ratcheting wrench set features standard, reversible and flex head models. All Carlyle ratcheting wrenches feature a limited lifetime warranty and are available exclusively at NAPA AUTO PARTS Store.