This product is an 11 mm bi‑hex (12‑point) socket with a 1/2 inch square drive, designed to be used with hand ratchets, breaker bars and extensions for fastening and unfastening hexagonal and 12‑point nuts and bolts. The bi‑hex geometry allows engagement on both 6‑ and 12‑point fasteners and permits finer indexing in confined spaces compared with a standard 6‑point socket.

The socket is manufactured from chrome vanadium steel (CrV), heat treated and tempered for improved toughness and resistance to wear. It is finished with a bright chrome plating to resist corrosion and ease cleaning after use. The 1/2in (12.7 mm) female drive fits industry‑standard 1/2in square male ratchets and extensions. As a hand‑tool socket it is produced to common metric socket dimensional standards (ISO/DIN/BS socket sizing conventions) so it will be compatible with other standard 1/2in drive tools and accessories; note this is not an impact‑rated socket and should not be used with pneumatic or electric impact tools unless specifically marked for impact use.

Typical applications include automotive and vehicle maintenance, plant engineering, agricultural machinery servicing and general industrial assembly where medium to high torque manual turning is required. The 12‑point profile is particularly useful in engine bays, transmission work and machinery maintenance where access is limited and fastener orientation requires frequent re‑positioning of the ratchet.

Key benefits of this 11 mm bi‑hex socket are its corrosion resistance from chrome plating, strength and durability from CrV construction and heat treatment, and broad compatibility with standard 1/2in drive hand tools and accessories. The bi‑hex head reduces the risk of rounding stressed fasteners compared with shallow or worn hex tools, while the standard sizing ensures interchangeability across tool brands.

Duchy Fasteners stocks this socket individually and as part of metric socket sets; sizes and pack options vary from single‑piece purchases to multi‑piece 1/4in, 3/8in and 1/2in drive sets to suit workshops and engineers. If you need alternative sizes or set options, please contact us for current availability.