3/8 Inch 12 Point Deep Impact Socket 21mm - Grey Pneumatic

The Grey Pneumatic 1121MD 3/8 Inch 12 Point Deep Impact Socket, 21mm, is engineered for professional automotive and industrial technicians tackling demanding tasks. This deep impact socket provides extended reach and secure engagement on stubborn 21mm fasteners, ensuring reliable performance in high-torque applications. Constructed from robust, impact-grade steel, it is built to withstand the rigorous output of pneumatic and cordless impact tools.

Key Features

• 3/8" Drive, 21mm Deep Profile: Offers extended reach for recessed fasteners and compatibility with compact impact wrenches, cordless tools, and ratchets.
• 12-Point Design: Facilitates quick and positive indexing, enhancing grip and minimizing the risk of rounding on new or worn 21mm fasteners.
• Impact-Grade Chrome-Molybdenum Steel: Constructed from heat-treated alloy steel for superior strength and resilience against the high-torque forces of professional impact tools.
• Precision Manufacturing: Produced to exact tolerances by Grey Pneumatic, ensuring a snug fit, reduced slippage, and dependable performance in demanding shop environments.

Applications

This 21mm deep impact socket is an essential tool for automotive and light truck repair, commonly used on many passenger cars and half-ton pickups. It is ideal for the removal and installation of lug nuts, strut and control arm hardware, subframe bolts, and various larger engine bay fasteners requiring a 21mm socket. This tool pairs effectively with 3/8" drive impact wrenches for wheel service, or with air ratchets and compact impacts for chassis and brake system work. Beyond automotive, it serves well in industrial maintenance, equipment assembly, and repair settings that regularly employ 21mm metric fasteners and demand impact-rated robustness.

Specifications

• Model: 1121MD
• Manufacturer: Grey Pneumatic
• Drive Size: 3/8 inch
• Socket Size: 21mm
• Style: 12 Point Deep Impact
• Dimensions: 2.5" x 1" x 1"
• Weight: 0.41 lbs