Genius Tools Impact Socket 21mm 1/2 Inch Drive Thin Wall 12-Point CR-Mo Steel - 453821

$9.12
sku
453821
  • Genius Tools 453821 is a 21mm metric impact socket with a 1/2 inch drive, thin wall profile, and 12-point fastener engagement.
  • Thin wall construction helps fit tighter clearance applications, while the compact 40mm overall length supports access in limited working space.
  • CR-Mo steel construction provides the specified strength, durability, and corrosion resistance needed for an impact socket application.
  • Oil-quenched heat treatment and a matte black oxide coating help the socket resist wear during regular fastening and removal tasks.
  • Permanently stamped 21mm size markings make identification easier, helping users quickly select and organize the correct 1/2 inch drive socket.

Genius Tools Impact Socket 21mm 1/2 Inch Drive Thin Wall 12-Point CR-Mo Steel - 453821 Impact Socket

This 21mm thin wall impact socket is built for tight-clearance fastening where a standard wall thickness won’t fit. The 12-point design helps engagement on compatible fasteners, while the 1/2" drive format keeps it aligned with common impact tools and professional socket systems.

Constructed from Chromium Molybdenum Alloy Steel (CR-Mo), it is designed for high strength and durability with anti-corrosive properties. A matte black oxide coating and oil-quenched heat treatment support long-term service with a tough exterior and strong inner core.

Key Benefits

  • Thin wall profile reaches tighter clearances without sacrificing impact socket strength.
  • 21mm, 12-point opening supports efficient fit on compatible fasteners.
  • 1/2" drive size integrates with standard impact wrenches and accessories.
  • 40mm overall length keeps the socket compact for confined working areas.
  • Chromium Molybdenum Alloy Steel provides high strength and durability.
  • Oil-quenched heat treatment and black oxide coating enhance long-term wear resistance.
  • Permanently stamped size markings improve tool organization and quick identification.

SKU: 453821. Meets or exceeds ANSI standards, and is backed by the Genius Tools Limited Lifetime Warranty against manufacturer defects. Designed for professional technicians, this thin wall CR-Mo impact socket balances access, durability, and easy identification for consistent, repeatable work.

More Information
Brand Genius Tools
Type Impact Sockets
WARRANTY icon
WARRANTY

Engineered for performance, backed by confidence.

Genius Tools offers robust warranties tailored to each product line.

Warranty
SUPPORT icon
SUPPORT

Exceptional service is just a message away

Contact the Genius Tools support team via email, form, or phone.

Contact Us
BLOG icon
BLOG

want to get more out of your tools?

Check out the Genius Tools blog for helpful tips, tricks, and how-to-guides.

Blog
CATALOGUE icon
CATALOGUE

From socket sets to specialty tools, our full catalog has what pros need.

- download now

Catalogue