Should be the one you need as long as your molding has the 3\32 inch spline -- As referenced in the first product review :
By Matthew C. Rings
Amazon Verified Purchase
This router bit was just what I needed for making my stand-up arcade, and routing out the edge groove for my T-molding. Great price, and much cheaper than the local home fixit store.
and from Game Molding.coms description of the one they sell that has the same 1\16th inch Kerf size ( they sell the blade and the arbor seperately and the cost is a bit higher) :
WHITESIDE MACHINE 6700A CARBIDE-TIP 3-WING SLOTTER
Requires a slot cutting arbor which can be found in the "T-Molding Tools" section
1-7/8 DIA X 5/16' BORE X 1/16 (.062) KERF
Use with molding that has a 3/32" wide spine