QZKJQDD 1/2'' Impact Drive Socket Sets, 21mm 6-Point Impact Socket, 21mm Scaffolding Impact Sockets, Ideal for Long Bolts and Scaffolding Clamps

• 【Complete Set for Efficiency】: This set includes a 21mm 6-Point Impact Socket and a 1/2-inch hex shank impact adapter—ideal for turning your drill into a powerful fastening tool. No need to search for separate components—get everything in one convenient package.
• 【Durable High-Quality Material】: Crafted from heat-treated chrome vanadium steel and forged high-speed steel, these 21mm Scaffolding Impact Sockets are built to endure high torque and impact, minimizing wear and cracking over time.
• 【Corrosion & Wear Resistant】: The electrophoretic surface finish enhances corrosion resistance and gives the socket a sleek appearance. Built to withstand rough environments, this Impact Socket 21mm set delivers long-lasting performance and durability.
• 【Precision Fit & Secure Hold】: The socket features a precisely machined 6-point design that grips fasteners tightly, reducing rounding. The included adapter is equipped with a spring-loaded ball bearing to firmly lock into the Impact Socket 21mm, ensuring a secure and slip-free connection.
• 【Heavy-Duty Application】: Designed to meet professional demands, these 1/2'' Impact Drive Socket Sets are suitable for automotive repairs, scaffolding work, engine maintenance, and home improvement projects—delivering reliable torque and efficient power transfer.

This 21mm hexagonal air cannon socket is designed for high-strength impact tools. It is forged from high-hardness chrome-vanadium steel and has excellent wear resistance and torsion resistance. It is suitable for heavy-duty repair tools such as pneumatic wrenches and electric impact wrenches. It can be widely used in scenes such as automobile tire disassembly and assembly, mechanical maintenance, and construction. It is an ideal choice for professional technicians and DIY enthusiasts. Product Features 1. High-strength material: Selected high-quality chrome-vanadium steel (Cr-V), after heat treatment process, has high hardness, strong toughness, is not easy to deform or break, and is suitable for high-strength working environments. 2. Precision hexagonal design: 21mm hexagonal interface, precise tolerance, tight bite, stable torque transmission, effectively preventing slipping or damage to the screw head. 3. Suitable for air cannon tools: specially designed for impact air cannons, standard interface, suitable for various brands of pneumatic and electric impact wrenches, fast installation, and convenient use. 4. Black phosphorus anti-rust treatment: The surface is treated with black phosphating, which has strong corrosion resistance, wear resistance and no rust, prolongs the service life of the tool, and can stably perform even in a humid or oily environment. 5. Wide applicability: It is suitable for a variety of application scenarios such as disassembly and assembly of automobile tire nuts, maintenance of heavy equipment, mechanical processing, industrial assembly, etc. It is an essential accessory in workshops, repair shops and home tool boxes. Specifications 1. Model: 21mm hexagonal impact socket 2. Material: chrome vanadium steel (Cr-V) 3. Drive interface: 1/2 inch (12.5mm) square head 4. Length: about 78mm (standard impact length) 5. Surface treatment: black phosphating anti-rust coating Suggestions for use 1. Confirm that the socket size matches the nut before use to avoid too loose or too tight. 2. It is recommended to use with a jackhammer or impact wrench, not suitable for non-impact power tools. 3. Clean and store in a dry environment after use to avoid corrosion caused by long-term moisture. This 21mm hexagonal jackhammer socket is durable and highly adaptable, and can easily handle various high-strength bolt operations. It is an ideal choice for users who pursue efficiency and quality.