Used for tongue-and-groove work, the interchangeable blade system enables you to cut six different tongue widths (grooves are cut with matching sizes of our standard blades) to support stock of varying thicknesses ndash; all using the same plane. Each A2 cutter has an integral depth stop and shaving deflector. The cutters are usable with both the right- and left-hand plow planes, and can be used with the combination plane for both right- and left-hand work. For those with our small plow plane, a wide-blade conversion kit is needed to use any of the tongue-cutting blades. These narrow tongue sizes are particularly well suited for the thinner stock used in cabinetry and drawer carcass construction. All blades have a 35deg; bevel angle. Made in Canada.