HSS SQUARE TOOL BITS T1,M2,M35 1.professional manufacturer 2.pass iso ... ,M2,M35 HSS SQUARE TOOLS BIT T1,M2,M35Specification:Metric System: 22---302, long 50-200 mmWidth for flat bar: 3mm ... used for cutting material that of high-hardness HSS SQUARE TOOL BITS T1,M2,M35