1 HSS-CO Sverlo 1mm Bosch 2608585838 is a high quality HSS (High-Speed ​​Steel) and a 1mm-diameter of the cobalt. This tool is ideal for drying especially hard metal and other materials. This provides this Sverlo, high performance and durability produced by Bosch. This is the perfect choice for this Sverlo, delicate and accurate hole opening works on 1mm size. HSS-CO outfit shows perfect resistance to high temperatures and wear during fast processing. This tool is a choice that is trusted for both professional and home users.