847/7 Set Combination Drill Bits Set, 7 pieces 1x 888/4/1 K Rapidaptor Universal Bit Holder: 1/4", x 50 mm 6x 847 HSS Combined Tap Bits: 2.5 mmx36 mmxM 3, 3.3 mmx39 mmxM 4, 4.2 mmx41 mmxM 5, 5 mmx44 mmxM 6, 6.8 mmx51 mmxM 8, 8.5 mmx59 mmxM 107-piece combination tapping drill bit set by Wera in a stable plastic box. drive suitable for holders as per DIN