Socket 1/2" 6-point 21 mm NEO tools 08-421

1/2" 6-point 21 mm socket from NEO tools, model 08-421, is a sturdy hand tool designed to work with 1/2-inch drive ratchets and torque wrenches. The 6-point internal profile provides a secure fit on hexagonal fasteners, reducing the risk of rounding and enabling reliable torque transfer. Constructed for workshop and field use, this 21 mm socket is suitable for repetitive mechanical tasks where precision and durability are required.

Advantages

The 6-point geometry ensures full-face contact with hex heads, minimizing slippage and wear on both fastener and socket. Compatibility with common 1/2" drive tools makes it versatile across automotive, industrial and home workshop applications. The socket is manufactured to deliver consistent fit and strength under load, improving efficiency when applying torque or removing stubborn fasteners.

Suitable for

• Automotive repairs — wheel nuts, engine and chassis fasteners
• Machinery maintenance and plant upkeep
• General mechanical assembly and disassembly
• Workshop and professional toolkits requiring a 21 mm socket

Key specifications

• Drive size: 1/2 inch (compatible with 1/2" ratchets and torque tools)
• Profile: 6-point (hex) for optimal contact with hex fasteners
• Socket size: 21 mm across flats
• Intended use: manual and torque-controlled fastening/removal

How to use

Select the 21 mm socket when the bolt or nut measures 21 mm across flats. Fit the socket securely onto a 1/2" drive ratchet or torque wrench, ensuring the retaining mechanism (spring ball or pin) engages if present. Place the socket fully over the fastener, apply steady force while maintaining alignment to avoid rounding. When using torque tools, set the required torque value and apply force smoothly until the tool indicates completion.

Usage recommendations

Use consistent and appropriate torque settings for critical fasteners to avoid over-tightening. Inspect the socket for wear or damage before use and replace if deformation or cracking is visible. Store in a dry toolbox to prevent corrosion and ensure long service life.