The Bosch Router Bit Set contains 12 high speed steel router bits in 1/4", 3/8", and 1/2" shank diameters. The set includes straight, roundover, cove, dovetail, and chamfer router bits as well as a V-groove, rabbet, flush trim, and Roman Ogee bits. With both top and bottom bearing options, this versatile 12-piece router bit set is designed for use on wood, laminate, and plastic materials. The bits feature precision ground carbide tips for long-lasting sharpness and performance.