Features: This ratcheting socket set features a two direction mechanism for quick reversal without socket removal, boosting efficiency in confined spaces with its pass through design for bolt access. Crafted from alloy steel with 12 point engagement, the sockets resist rounding nut and withstand 30% more torques than carbon steel, ideal for corrosions prone environments. Ideal for professional mechanics tackling automotive suspension repairs and DIYer enthusiasts maintaining heavy machinery or assembling appliances with comprehensive size coverage. Perfect for tight space alternator jobs or reach mechanical tasks requiring long bolt extraction, its impacts sockets handle pneumatic tools safely. Engineered with thickened wall through quenching technology, these sockets endure rigorous impacts wrench use in garages while organized storage simplifies tool selection during complex projects. Specifications: Plastic storage box size:27x18x6.5cm/10.62x7.08x2.55inch Includes three specifications of 17PC/28PC/31PC Package Includes: 1 Set Bidirectional ratcheting note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.