Koken sockets made in japan by far my favorite socket brand : r/Tools
Koken 36mm 1/2" Drive Socket
NTD Koken Zeal 1/4 set. The chrome socket in the middle is a 10mm Williams (Taiwan) the socket to the left is the Koken 10mm. Crazy difference in height between the tool.
Koken P4241M-01 28 Piece 1/2"Drive 6 Point Socket Set | UKtools
KOKEN 3400 LH SOCKET SET *NEW* x7 PIECES | eBay
ToolSolutions » Koken Tools
Koken RS3012A/12-L52 12pc 3/8Drive AF Hex Sockets Set 1/8 to 9/16 | UKtools
Whitworth Socket Sets By Koken
Sockets & Accessories - by Koken & Stahlwille - White International
Ko-ken Tools the web
Koken RS2400MZ/12 Zeal 6.35mm Socket Set with Rail Review
Koken Whitworth sockets – Franz and Grubb Engine
KOKEN Z-EAL 1/4" DEEP SOCKET SET (12pcs) RS2300MZ/12 MADE IN JAPAN | eBay