Thumb Score: +9 Stock up on those missing 10mm's! As far as I'm aware, all Ko-ken tools are made in Japan. A couple examples of some good deals (esp given free shipping at any amount) that I found: 10mm 1/4" standard chrome socket [kokenusa.com] for $3.44 after discount Surface Drive (ie: flank drive) socket in 10mm 1/4" [kokenusa.com] for $3.60 after discount 1/4" flexible extension bar (approx foot long) [kokenusa.com] for $22.16 after discount