1/2-inch Biscuit Number 20 Tungsten Carbide Tip Router Bit This router bit has a half inch shank Biscuit no.20 for cutting slots, for joining biscuits Tungsten carbide tipped router bit, hardened and tempered to ensure a long life 1/2-inch Biscuit Number 20 Tungsten Carbide Tip Router Bit This router bit has a half inch shank Biscuit no.20 for cutting slots, for joining biscuits Tungsten carbide tipped router bit, hardened and tempered to ensure a long life