It almost looks like the same bits are used for the ends.
Car siding router bit.
Tacklife 1 4 inch shank router bit set tongue and groove router bits lock miter router bit with 45 degree 4pcs bearings set professional choice for home improvement rb31c 4 3 out of 5 stars 237 29 99 29.
Great router bits 5 5 aug 12 2019 by keith showalter everett pa us i just purchased these for doing tongue and groove inside corner cabinets.
All router bits are carbide tipped unless noted otherwise as solid carbide or solid carbide insert.
These include tongue and groove tongue and groove with v edging for car siding 90 degree v groove male and female bits and special glue joint bits.
Beading and fluting bits by amana feature outstanding tool longevity a tendency to stay sharper mirror like carbide finish excellent carbide brazing a broad selection of sizes and most importantly quality of cut.
Rockler tongue and groove router bit 1 4 h x 1 2 shank x 3 8 depth of cut 69.
I used wormy oak and resawed it then planed it to 3 8 and then used these cutters.
99 rockler 1 1 16 diameter x 3 4 high drawer lock bit.
I ve already got the router bit set for the tongue and groove v groove for car siding.