Stepped Drill Bit

Precision for metalworking

Cobalt-alloy HSS steel provides heat resistance and supports clean drilling in hard materials such as stainless steel. Optimized geometry is designed to reduce ragged edges and follow-up work. The bits are intended for workshop and DIY use, including repair and assembly tasks.

Durability and handling

The source states up to 30% longer service life compared with standard drill bits. Maximum speeds vary by bit type from 150 min⁻¹ to 1800 min⁻¹. The bits are compatible with common drills and cordless drill drivers; when using a cordless tool, use an appropriate lower speed. For metalworking, regular cooling and controlled feed can help reduce wear.

Applications and bit options

• The stepped drill bit sets are available in two versions, with working lengths of approximately 52 mm and 76 mm, for drilling multiple hole sizes.
• The multifunctional set combines countersink, sheet metal and stepped drill bits for plastic, aluminum, and materials up to 1 mm thick, including steel and copper.
• The multifunctional stepped bit covers 4–12 mm; the sheet metal bit covers 8–20 mm; the countersink bit measures approximately 12.4 mm.

Follow the recommended speed and cooling guidance for the material being drilled.