New Buffalo 84731 Drive X-Core Pinless Impact Universal Metric Socket - 1/2 6-Point 21mm

The New Buffalo 84731 is a 1/2" drive, 6-point, 21mm metric impact universal socket built around New Buffalo's proprietary X-Core™ pinless design. Unlike traditional universal sockets that rely on a retention pin, the X-Core™ pinless mechanism allows the socket to flex and articulate freely without the risk of a pin breaking under high-torque impact loads — making it safer and more durable in demanding applications.

The 6-point standard geometry maximizes contact with fastener flats, reducing the chance of rounding off nuts and bolts even when driving at an angle. The socket is designed to work with 1/2" drive impact wrenches and ratchets, and the universal joint built into the socket body allows access to fasteners in tight, angled, or hard-to-reach locations without needing a separate universal joint adapter.

Key Features:

• X-Core™ Pinless Universal Joint — eliminates the failure point of traditional retention pins under impact use
• 1/2" Drive — compatible with standard 1/2" drive impact wrenches and ratchets
• 6-Point Design — full-contact on fastener flats for maximum torque transfer and reduced fastener rounding
• 21mm Metric Size — fits 21mm hex fasteners commonly found on lug nuts, suspension components, and drivetrain hardware
• Standard Length — suitable for general-purpose applications
• Impact-Rated Construction — built to withstand the shock loads generated by pneumatic and electric impact wrenches
• Articulating Universal Design — reaches fasteners at difficult angles without a separate universal adapter

The New Buffalo 84731 is an excellent choice for professional technicians and serious DIYers who need reliable, impact-rated universal socket performance in a 21mm metric size. The X-Core™ pinless construction sets it apart from conventional universal sockets, delivering durability and confidence in high-torque impact applications.