Exact Drill Bits & Parts Twist drill bit 620956 - Exact 74450, The Exact 74450 is a twist drill bit specifically designed for precision machining tasks. With a 5.0 mm diameter, it is ideal for drilling into metal, steel, and sheet materials. This tool is commonly used in professional and industrial applications due to its reliability and performance. Exact 74450 Twist Drill Bit 5.0mm TIAIN-TIP DIN 338 10pcs