PFERD Drill Bits & Parts Metal twist drill bit set 609987 - PFERD 25203702, The PFERD 25203702 Steel Metal twist drill bit set contains 25 high-speed steel drill bits suitable for machining applications. This set covers sizes from 1 to 13 mm, making it versatile for use with various steel and sheet metal materials. It is ideal for precision drilling in both industrial and DIY projects. PFERD 25203702 Steel metal twist drill bit set 25-piece HSSG