High quality material: Carbon steel construction for high functionality and durability Wide range of applications: 1/4 Zoll, 5/16 Zoll, 3/8 Zoll, 1/2 Zoll, 9/16 Zoll, 5/8 Zoll, 3/4 Zoll, 7/8 Zoll, 1 Zoll, 1-1/8 Zoll, 1-1/4 Zoll, 1-3/8 Zoll, 1 -1/2 Zoll, different sizes for different uses Quick change and hex shank: The 6 mm hex shank with groove allows quick loading of drill bits and prevents chuck slippage. It is compatible with most drills on the market Clean and sharp: Precision ground center tips for exact positioning and channel for rapid chip evacuation increase drilling speed and allow a clean cut Neat: It comes with a durable and portable storage box that is perfect for keeping your tools organized and carrying them to different workplaces 13pcs Drill Bit Set Flat Flat Drill Bit Set Drill Bit Boxes Material: carbon steel Shank type: straight shank Length: 15 cm Diameter: 6mm Sizes: 1/4 Zoll, 5/16 Zoll, 3/8 Zoll, 1/2 Zoll, 9/16 Zoll, 5/8 Zoll, 3/4 Zoll, 7/ 8 Zoll, 1 Zoll, 1-1/8 Zoll, 1-1/4 Zoll, 1-3/8 Zoll, 1-1/2 Zoll Supplied with: 13 x flat router bits, 1 x plastic storage box Note Please keep it cool and gentle, the service life of the wood bits can be greatly extended by proper use. p> Welcometomeet