From the Manufacturer
Ground perfectly flat and true, this planer has a cast-iron bottom and sides. The fully adjustable cutter rests at a 21-degree angle; the adjustable mouth opening is for coarse or fine work. There are comfortable finger grips on the sides, and it has a replaceable cutter. Length: 6 inches. Cutter width: 1-5/8 inches.
mfr: STANLEY TOOLS DIVISION BAILEY BLOCK PLANE Cutter sets a 21 degree angle Grey cast iron base Side and botton are precision ground Precision shaving w/adjustable controls Adjustable mouth and cutter Ideal for planing end grain & plastic material 12-920 BENCH PLANE (12-020) SIZE:1-5/8 x 6-1/4"