The 12" section of channel iron used for the main body is formed to fit a standard dressed 2 x 4 (3-5/8").
The channel has teeth in it to hold it in position so that a rocking motion can be used while cutting. It clamps to the chain-saw bar with two bolts. The inside of the "U" clamp has a serrated plate for positive grip. An integral level helps assure accurate cuts.
Made in Canada.