Contains 3 drill sets; 19Pc HSS-G (1-10mm/0.5mm), 19Pc HSS-G TiN (1-10mm/0.5mm), 19Pc HSSE-Co5 Cobalt (1-10mm/0.5mm). Sizes: 1.0 - 10.0mm in 0.5mm increments, Supplied in anti-spill plastic case.