Keyhole bits keep breaking

I use a depth of cut of about 516 on keyhole slots, so if you want that depth then expose whatever gets you to that depth factoring in the

T-slot and keyhole router bits are extremely useful for all types of projects, jigs, and fixtures They can be used to create keyhole slots for hanging pictures

keyhole slot hanger This bit routs a groove with an overall diameter of 2564” and a minor diameter of 316”

keyhole slot Carbide Tipped Keyhole 38 Dia x 38 x 14 Inch Shank Form keyhole slots in plaques, picture frames, and other wall-hanging items with this plunge-cutting