The Milescraft Core Box Long Reach Router Bit Set contains 3 bits that are 2-3/8″ long. The tungsten carbide-tipped bits are perfect for routing wood signs. This 3-bit set comes with a 1/4″, 3/8″, and 1/2″ core box bit, each with a 1/4″ shank. The 1/4″ bit is the same bit provided with the SignPRO™ for use with the 1-1/2″ letter templates. The 3/8″ bit is the same bit provided with the SignCrafter™ and SignPRO™, for use with the 2-1/2″ letter templates. Use the 1/2″ bit with the 2-1/2″ templates to create ‘bold’ letters. Features 2-3/8″ overall length is ideal for sign making Tungsten carbide tipped for long-lasting durability Fits all 1/4″ collets 3 sizes for increased versatility while routing signs