This item is the 63-108 Slotting Cutter Set, with 2" overall diameter, 1/8" carbide height, 9/16" cut depth, 1/4" shank diameter, and 2-3/8" overall length.
Produces 9/16 inch slots for T-moldings, spline joints, and tongue & groove joints
Sets include three-wing slotting cutter, arbor, and ball bearing
Easily cuts composition materials, plywoods, hardwoods, and softwoods
For use with handheld and table-mounted portable routers