I used this bit to cut 1-1/2 MDF for countertops. Since I needed a 1/4" shank for my router, I was concerned it might rock or go with a cut that deep. 3/8". I'm sure it gets boring on heavy materials but that's why I bought 2.
Pros
Professional quality bits, C3 bits made from fine grit tungsten carbide, durable hardened steel bodies with anti-kickback protection for depth control and safe operation.