Ko-ken (Koken Tool) is a specialist Japanese hand-tool maker trusted by mechanics and motorsport teams worldwide. The range covers precision 1/4in, 3/8in, 1/2in and 3/4in drive sockets, impact, deep and hex sockets, ratchets, extensions and complete socket sets, including the premium Z-series. Renowned for tight tolerances, durable chrome-vanadium construction and long service life. Black Hawk Japan stocks the full Ko-ken tool range, sourced direct from Japan.
