The Bosch Router Bit Set - Fractional contains 12 router bits made of micrograin carbide tipped 1/4-Inch shanks. The set includes slot cutter, dovetail, round nose, straight, V-groove, 45 Chamfer, Roman Ogee, cove, round over, flush trim, 45 V-groove and core box router bits. These router bits are designed for use on wood, laminate and plastic. They feature precision ground carbide tips brazed to heat treated tool steel shafts. The router bits have a cutting diameter range of 5/32-Inch to 1-Inch and shank lengths of 1-1/4-Inch. The bits come in a plastic case for convenient storage and transport.