4mm 4mm Long Wood Drill, Extra Lange Bohrer, HSS Twist Drill Bits with Straight Shank for Hard Metal, Stainless Steel, Cast Iron and Other Hard Materials, 1 Piece: Amazon.com: Tools & Home
Bosch Professional Metallbohrer HSS-Cobalt (Ø 1 mm) : Amazon.de: Baumarkt
1mm extra lange HSS Metallbohrer Spiralbohrer Tieflochbohrer 1x150mm : Amazon.de: Baumarkt