
Bosch Professional · Countersinks
Bosch PRO HSS Countersink Bit 20mm
The Bosch PRO Steel HSS Countersink Drill Bit in 20mm is the largest in the range, designed for countersinking and deburring the widest pre-drilled holes in steel. This 20mm variant is the go-to choice when you need maximum coverage for larger-diameter fixings and heavy-duty steel fabrication work. Built from high-speed steel (HSS), it offers exceptional strength and heat resistance even under sustained use. The 90° cutting edges cut cleanly and accurately through soft metal, ensuring burr-free countersink holes to a professional finish. Compatible with standard three-jaw drill chucks via its cylindrical shank, it integrates easily into your existing setup. Features and Benefits: • HSS construction for superior strength and heat resistance • 90° cutting edges for precise, burr-free countersinking in steel • Effective deburring of pre-drilled holes in soft metal • Cylindrical shank compatible with three-jaw drill chucks
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