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These forged & polished high-speed steel drill bits are ideal for use on mild steels, soft metals (aluminium, copper, brass, bronze) & non-ferrous metals. They are manufactured to DIN 338 standard. Size: 1.5, 2, 2.5, 3, 3.2, 3.5, 4, 4.2, 4.5, 5, 5.5, 6, 6.5mm Product SKU ST-HD-DB213 x 1