CMT 890.527.11 Raised Panel Bit With Backcutter, 1/2-Inch Shank, 3-1/2-Inch Diameter, Carbide-Tipped Board Thickness from 3/4 to 1Inch, 3-5/64-Inch Overall Length Use on router tables only Mills both the front and the back of the panel in the same cut Non-Stick Orange Shield Coating, Anti-Kickback Design, Equipped with Bearing 2 SinterHip Hi-Density Industrial Chrome Carbide cutting edges for long-lasting performance CMT bits were rated the best overall in comparison to other brand (Test by Wood Magazine)