WB Carbide End mill and drills we have large stock .normal size as below :
Flat End Mill size from Dia 1mm to 20mm
Ball Nose End Mill Size from Dia 1mm to 25mm
Bull Nose End Mill size from Dia 1mm to 15mm
Drills from 1mm to 20mm .
all those size have stock ,below is WB Carbide stock picture