Bosch High-Speed Steel Step Drill Bit 6–30 mm

The Bosch 2608597520 HSS step drill bit, 6–30 mm, is a one-piece accessory designed for drilling and enlarging holes in metal. It widens openings in stages rather than relying on a set of fixed-size bits, so a single tool covers a range of diameters. Made from high-speed steel, it has the hardness needed to penetrate thin sheet material. A small pilot hole can be started first, then the cutter is advanced deeper until the opening reaches the required size, which reduces the time spent swapping accessories during fabrication or installation work.

The solid shank design is directly compatible with Bosch power tools and standard three-jaw chucks. The cutting geometry supports controlled material removal and helps reduce chatter when passing through thin material. A rigid stepped profile holds its shape under sustained downward pressure. The bright stainless-steel finish makes the bit easy to spot in a crowded toolbox. Consistent performance delivers reliable, repeatable hole enlargement during ongoing fabrication work.

• 30 mm maximum working diameter for large clearance holes for cables or hardware in sheet metal.
• 93.5 mm overall length gives adequate reach while maintaining core rigidity during use.
• 100 g total weight avoids noticeable forward imbalance on lightweight cordless drills.
• 10 mm three-flat shank provides a secure mechanical grip in the chuck without slippage.
• Manufactured in Switzerland to precise dimensional tolerances across the cutting profile.