The Japanese Timber Framing Slick is a Fujikawa slick for two-handed paring of large joinery, in 1-7/8 in (48 mm) or 1 in (24 mm).
The blade is traditional Japanese lamination: a layer of hard Shirogami No. 2 white paper steel forge-welded to a softer body, so the hard steel takes the edge and the soft steel absorbs shock. The blade is about 115 mm (4-1/2 in) long and the slick about 580 mm (22-3/4 in) overall, on a red oak handle with a steel ferrule. A hairline gap between ferrule and blade is normal and leaves room for the wood to move.
Most American framers pick the wider one, since most joints are 2 in or narrower and the 48 mm lets you slick the end grain of a mortise in one pass. This steel is hard enough to chip if it is pried or dropped, so it is not the slick we recommend for beginners or heavy hands. Like all slicks, it is pushed, never struck.
These come from the Fujikawa forge in Miki City, in Japan's Hyogo Prefecture, where Mr. Fujikawa insists on completely traditional methods.