CLASSICAL COVE & BREAD 1/2 SHKThe positions of the bead and the cove are reversed on this series of bits, with the bead coming off the bearing. With the optional 3/8" pilot bearing, the bit produces a fillet at the base of the bead. Largest diameter bits should be run at reduced speed. Use in a handheld or table-mounted router. Maximum RPM 18,000.