Koken

Koken sockets, ratchets, extensions and specialist tools, made in Japan and sold in New Zealand since 1957. Hundreds of Koken lines are listed, most of them in stock.

Koken is known for its sockets. Its flat-drive design contacts the flats of a fastener rather than the corners, which reduces rounding on tight or corroded nuts. The range runs from 1/4" to 1" drive, in hand and impact versions, plus deep, universal-joint and specialist sockets for automotive and heavy-equipment work.

Koken manufactures with computer-controlled heat treatment for consistent hardness, and has more than 60 years of socket design behind it.