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.
