Master Set – 3/8″ & 1/2″ drive std, deep sockets; star, E-star, stubby triple square, tamperproof star, std, long and stubby hex bit sockets, U-joints, extensions, adapters. Sockets: 8-30mm, 5/16″-1-1/2″; Bits up to 19mm, 3/4, T55, E16, T50H, & M16. CR-MO Alloy Steel – Crafted from premium chrome molybdenum alloy steel, these sockets deliver maximum strength, durability, and impact resistance, making them ideal for demanding jobs in professional and industrial settings. Cr-MO Alloy Steel – Crafted from premium chrome molybdenum alloy steel, these sockets deliver maximum strength, durability, and impact resistance, making them ideal for demanding jobs in professional and industrial settings. Radius Corner Design – The sockets are designed with a radius corner to improve fastener engagement, minimize rounding, and reduce wear on both the tool and fasteners, extending their lifespan and reliability. Dual Size Markings – Each socket features high-visibility laser markings and permanent stamped markings, ensuring quick, accurate size identification even after prolonged use or in low-light conditions. Versatile Bit Sockets – Features impact bit sockets including star, E-star, stubby triple square, stubby tamperproof star, and standard, long and stubby hex bit sockets for any job. Universal Joints – Engineered for 360° rotation, these universal joints allow access to hard-to-reach fasteners, offering up to a 30° angle of flexibility for superior versatility and ease of use. Adjustable Socket Rails – Comes with 14 rails featuring independently adjustable studs, accommodating standard and deep sockets of varying sizes while holding them securely at any orientation for easy storage and access. Black Phosphate Finish – Finished with black phosphate coating to provide superior corrosion resistance, protecting the sockets from rust and wear even in tough environments or extended storage. The 181-Piece Master Impact Socket & Bit Socket Set delivers unmatched versatility and durability for professionals and enthusiasts. This comprehensive set includes 3/8″ and 1/2″ drive standard and deep sockets, star, E-star, stubby triple square, tamperproof star, and a variety of standard, long, and stubby hex bit sockets. Sizes range from 8-30mm, 5/16″-1-1/2″, and bit sockets range from 4mm-19mm, 3/16″-3/4″, T20-T55, E5-E16, T10H-T50H, and M4-M16, along with universal joints, extensions, and adapters. Constructed from premium CR-MO alloy steel, these tools provide exceptional strength and impact resistance. The radius corner design enhances fastener engagement and reduces wear, while dual laser and stamped size markings ensure quick identification even in tough conditions. The set features adjustable socket rails for organized storage, black phosphate coating for rust protection, and universal joints with 360° rotation for accessing hard-to-reach fasteners. Automotive Aftermarket Tool Supplier. Our customers make up an exclusive network of successful business people who service and sell ls to the repair trade. Our inventory boasts a large variety of name brand products, stocking the most popular tool manufacturers from Acme to Znex. Our in-depth selection of inventory gives you the diversity your customers demand. We have the experience and motivation that make the difference. ABOUT AMCO AUTO PARTS. AMCO Auto Parts, LLC has been striving to supply and support car enthusiasts around the world with the products and service they deserve. With the economy the way it is we understand how important pricing is. Here at AMCO Auto Parts our car parts have some of the lowest prices around. With that in mind you will not lose quality. We offer auto car and truck parts from nearly 150 manufacturers. These companies are some of the most highly regarded in the automotive industry today. Our highly skilled staff is ready to answer any of your questions. We would like to thank our new and existing customers for their trust and support in our company. AMCO Auto Parts will continue to provide top notch customer service along with quality car parts and low pricing. Product images may not be vehicle specific. AMCO Auto Parts, LLC.