This is a 17 mm Elora bi‑hex (12‑point) socket with a 1/2 inch square drive, intended for use with 1/2in drive ratchets, torque wrenches and breaker bars to tighten and loosen hexagonal and bi‑hex fasteners in confined or high‑torque applications. The bi‑hex profile permits engagement on fasteners at a greater range of angles compared with 6‑point sockets and reduces rounding on slightly damaged nuts.

The socket is manufactured from chrome‑vanadium (Cr‑V) alloy steel and is heat treated and tempered to deliver the strength and wear resistance required of workshop hand tools; typical finished hardness is in the HRC mid‑40s to mid‑50s range. The external finish is a mirror polished chrome plating which provides corrosion resistance and eases cleaning during routine maintenance. The socket body carries the 1/2in female square recess with a retention hole compatible with spring detent balls and pin/clip retainers used on standard drive tools; thread type is not applicable.

Dimensionally this Elora socket is produced to recognised hand‑tool standards for sockets and square drives and conforms to relevant DIN, ISO and BS tool tolerances for interchangeability with other manufacturers’ 1/2in drive equipment. The 12‑point (bi‑hex) head type is particularly useful where access is limited or when multiple engagement positions are needed, and it works well on fine‑pitch or thin‑walled fasteners where a full 6‑point socket cannot be used.

Typical applications include automotive and commercial vehicle maintenance, plant and machinery servicing, agricultural machinery repair, HVAC installation, and general mechanical and fabrication workshops. Key benefits are good corrosion resistance from the chrome finish, high torque capacity thanks to the Cr‑V heat treatment, and broad compatibility with 1/2in drive ratchets, extensions and torque tools used across industry.

Duchy Fasteners stocks this Elora 17 mm 1/2in drive bi‑hex socket as an individual item and as part of metric socket sets; our range covers multiple metric sizes and pack options—contact us for current availability and pack quantities.