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Black oxide alloy steel impact socket adapter, 1 inch female to 3/4 inch male square drives

Westward

Westward 21WM79 Impact Socket Adapter

SKU CH-YJ05-25QHZ

Impact socket adapter with 1" female and 3/4" male square drives for high-torque applications

  • TypeSockets
  • High torque capacity with 1" female drive input
  • Alloy steel construction resists wear under heavy loads
  • Black oxide finish protects against corrosion
  • Quick-release function via 3/4" male output drive
  • SAE measurement suits standard automotive applications

Drive Size Adaptation

The Westward 21WM79 is a 1" female to 3/4" male impact socket adapter built for high-torque applications. It connects large-drive impact tools to smaller standard sockets and ratchets. Professional mechanics and industrial maintenance crews use it when a job requires stepping down drive sizes quickly. The alloy steel body handles the stress of repeated impact cycles.

Build Integration

This adapter fits directly onto any 1" drive impact wrench or driver, instantly accepting 3/4" drive sockets. It removes the need to own duplicate socket sets in both drive sizes, saving space in a mobile tool kit. The quick-release style square drives let you swap sockets without tools. It is not suited for buyers who need a step-up adapter or a different drive combination.

Durability And Finish

A black oxide coating covers the alloy steel to resist rust and corrosion in wet or humid shop environments. The material choice absorbs the shock loads typical of impact use without rounding the drive squares. Under normal professional use the adapter runs cool and adds negligible length to the tool stack. No lubrication or special maintenance is required beyond wiping it clean.

Highlights

  • High torque capacity with 1" female drive input
  • Alloy steel construction resists wear under heavy loads
  • Black oxide finish protects against corrosion
  • Quick-release function via 3/4" male output drive
  • SAE measurement suits standard automotive applications

Specifications

BrandWESTWARD
TypeSockets

Questions about this item

What is the maximum input drive size the Westward 21WM79 adapter accepts before the connection becomes the limiting factor?

The adapter accepts a 1 inch female square drive, so the tool's anvil must match that size for a secure fit under sustained torque.

Does the alloy steel construction and black oxide finish of the 21WM79 control heat buildup during all-day impact use?

The alloy steel body absorbs impact energy while the black oxide coating resists corrosion, but the adapter has no active cooling so heat will equalise with the connected tool.

Which drive tools must I already own to use the 1 inch female to 3/4 inch male configuration of the 21WM79?

You need an impact driver or wrench with a 1 inch male anvil and a socket or ratchet with a 3/4 inch female square drive.

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