Amana tool 57166 Carbide Tipped 4 Wing Cut Out Solid Surface 3-5/8 D x 1/4 CH x 1/2 Inch SHK x 1 Depth of Cut Router Bit

To achieve the best possible results, use these bits with a variable speed router: Minimum horsepower: 2-1/2 Speed 12,000 RPM or less Max RPM for 57165 = 12,000 Max RPM for 57166 = 13,000 Use for cutting out undermount bowls, Surell, Fountainhead and other solid surface undermount bowls. For Corian bowls, must be used with a Corian bowl template.