Comparison : Item # D801420, Ball Shape - 1/4" Shanks, NF Carbide Burrs
Item # D801425, Ball Shape - 1/4" Shanks, NF Carbide Burrs
Item # D801430, Ball Shape - 1/4" Shanks, NF Carbide Burrs
Item # D801435, Ball Shape - 1/4" Shanks, NF Carbide Burrs
Item # D801440, Ball Shape - 1/4" Shanks, NF Carbide Burrs