【 Wide Compatibility and Versatility 】 Ideal for automotive repair , mechanical maintenance , and home improvement projects to meet diverse user needs . Equipped with a universal 1/2inch air impact wrench adapter , it seamlessly works with pneumatic and electric impact wrenches , expanding your tool's functionality 【 Hexagonal Design for Maximum Torque 】 The extension bars adopt a hexagonal bore structure to maximize torque transfer , enabling faster tightening and loosening of bolts and nuts . Complete tasks with less effort and save valuable time on every project 【 Premium Material 】 Crafted from steel , these sockets undergo 600°C high temperature tempering and -70°C cryogenic treatment to break technical bottlenecks , significantly enhancing toughness , avoiding chipping , and delivering excellent rust resistance for various working environments 【 Exquisite Design 】 Featuring a non drop locking hole that works with pins and washers for enhanced security , the concave interface ensures a tight , wear resistant fit and stronger grip . With an ultra thin wall thickness of just 2.0mm/0.08in , these sockets easily access fasteners in narrow gaps 【 Complete Socket Set 】 This 7 piece set features precise metric sizes : 8mm , 10mm , 12mm , 13mm , 14mm , 17mm , and 19mm . Each extension bar delivers a tight , high precision fit that locks onto fasteners , ensuring a secure grip during use . Ideal for tire changes , mechanical repairs , and other tasks requiring stability, Manufacturer: PATNFR