In that photo, they look like backhoe teeth.
Metal shaper bits | Power Tools | Saskatoon | Kijiji
Not sure if there are many customers for these but .... New old (very old, I've had them for 20 years and they were old when I got them) stock of Kennametal brazed carbide shaper bits, 6 in total. 1" x 0.5" shank, WAY to big for my little shaper! One has seen a little use and was ground to fit...
www.kijiji.ca