DeWalt Industrial Cobalt drill bits are suitable for demanding materials like stainless steel and have up to four times greater life time than comparable standard HSS drill bits. This 13 piece set is supplied with a Tough Case which can be connected onto other DeWalt Tough Case and transported in a TSTAK caddy for maximum convience Features and Benefits • Suitable for portable or stationary drilling • Ideal for high alloy content steels and metals with a tensile strength up to 1100N/mm² • The 'no-walk' tip allows for easier penetration of all surfaces (5mm and above) • Cleaner, more accurate, burr-free holes due to recessed cutting wings • No slip shank; spin proof three sided shaft for optimal grip in drill chuck Contents • 1.5mm Drill Bit • 2mm Drill Bit • 2.5mm Drill Bit • 3mm Drill Bit • 3.2mm Drill Bit • 4mm Drill Bit • 4.5mm Drill Bit • 5mm Drill Bit • 5.5mm Drill Bit • 6mm Drill Bit • 6.5mm Drill Bit • 7mm Drill Bit • Tough Case