This Bosch Drill Bit set is manufactured from high quality ground HSS steel, for pure durability and longevity. They have precision ground cutting edges for fast drilling and perfect finishing, a ground flute for maximum accuracy and fast chip removal. They have a universal 118º point shape for drilling a wide selection of materials, metals, steel, iron, copper, aluminium, woods, plastics and more. Manufactured to DIN 338 standards. The drill bits come complete with a super tough case for safe storage. Diameter in mm x working length in mm: 1,0 x 34 1,5 x 40 2,0 x 49 2,0 x 49 2,5 x 57 3,0 x 61 3,0 x 61 3,5 x 70 4,0 x 75 4,0 x 75 4,5 x 80 5,0 x 86 5,5 x 93 6,0 x 93 7,0 x 109 8,0 x 117 9,0 x 125 10.0 x 133