These Long Reach Router Bits are 2-3/8-Inch long tungsten carbide tipped bits perfect for routing wood signs. This 3 bit set comes with a 1/4 , 3/8, and 1/2-Inch core box bit, each with 1/4-Inch shank. The 1/4-Inch bit is the same bit provided with the SignPro™ from Milescraft® for use with the 1-1/2-Inch letter templates. The 3/8-Inch bit is the same bit provided with the SignCrafter™ and SignPro™ from Milescraft® for use with the 2-1/2-Inch letter templates. Use the 1/2-Inch bit with the 2-1/2-Inch templates to create 'bold' letters.