Hakkin Forstner Drill Bit Set 5 Pieces Hinge Drill Bit Wood Drill with Centring Point Dowel Drill Cutting Auger Drill Bit (15, 20, 25, 30, 35 mm) : Amazon.de: DIY & Tools
Amazon.com: Wolfcraft 8917000 Plumbing Standard Hole Saw, 4 Quick Change Saw Blades, Diameter 25/35/43/53mm : Tools & Home Improvement