This product is a 12 mm bi‑hex (12‑point) socket with a 1/2 inch square drive, designed to engage metric 12 mm fasteners using standard 1/2in drive ratchets, torque wrenches and breaker bars. Its primary use is to apply controlled torque to hex-headed bolts and nuts in automotive repair, plant maintenance and general engineering where a 1/2in drive toolset is used.

The socket is manufactured from chrome‑vanadium (Cr‑V) steel and has been heat treated to hand‑tool hardness for strength and durability. The exterior is finished with a bright chrome plating to resist corrosion and simplify cleaning. The component complies with common DIN/ISO/BS hand‑tool dimensional and performance standards for sockets and drives, ensuring compatibility with other 1/2in drive accessories. The 12‑point (bi‑hex) head form permits quicker alignment onto the fastener and can be used on both hex and some rounded fastener heads; the drive interface is a 1/2in (12.7 mm) square recess compatible with standard 1/2in ratchets and extensions.

Typical applications include vehicle workshop work (engine, transmission and suspension fastenings), agricultural machinery maintenance, industrial plant assembly and service, construction equipment repair and general mechanical workshops. The 12‑point geometry is particularly useful where there is limited swing angle, allowing engagement at twice the positions of a 6‑point socket, while the Cr‑V construction provides the strength required for higher torque hand applications. Note that this is a hand‑tool socket and is not intended for use with impact wrenches; use dedicated impact sockets for pneumatic or high‑impact tools.

Key benefits are dependable corrosion resistance from the chrome finish, strong and wear‑resistant Cr‑V material capable of repeated use, and broad compatibility with 1/2in drive tool kits and accessories. Duchy Fasteners stocks this 12 mm bi‑hex 1/2in drive socket in single pieces and as part of mixed metric sets, with standard and deep lengths available and pack options to suit workshop or individual needs.