KASAFE M35 Cobalt HSS Step Drill Bit

The essentials

The KASAFE M35 cobalt HSS step drill bit is a versatile tool designed to handle both hard and soft metals with precision. Built from M35 cobalt high speed steel, it offers superior hardness and wear resistance compared with standard HSS bits, making it well suited to stainless steel and cast iron as well as copper and aluminium. The 11 step sizes from 3 to 13 mm enable quick drilling and enlarging of holes with one tool, reducing tool changes during maintenance, automotive work or electrical installations. Its 118° X type cutting tip helps start holes accurately even on uneven surfaces, while the spiral flute efficiently evacuates metal shavings to minimise clogging and burr formation. You gain a reliable drill that stays sharper longer and supports consistent results across a range of metal thicknesses, from copper foil to solid steel plates, with less chance of wandering on initial contact 🛠️.

With a universal 1/4 inch hex shank, this bit fits securely in most drills and impact drivers, including cordless models and drill presses, enabling steady performance at speed. The combination of a robust cobalt alloy and a multi step design makes it a practical choice for workshops and DIY setups alike, delivering value through reduced tool swaps and faster completion of metalworking tasks. The bit is optimised for multi-material projects, so you can rely on it whether you are fabricating brackets, busbars or sheet metal enclosures, keeping burrs to a minimum and holes cleanly finished ✨.

Technical details

• Name: KASAFE M35 Cobalt HSS Step Drill Bit
• Type: Step drill bit
• Size: 3-13 mm range
• Format: 11-step
• Material: M35 cobalt high speed steel
• Shank: 1/4 inch hex
• Applications: Suitable for stainless steel, cast iron, copper, aluminium and related alloys

Who it’s for

This tool suits professional workshops and confident DIYers who regularly drill through a variety of metals. If you work with stainless steel components, copper panels, or aluminium frames, you will appreciate the ability to drill and expand holes with a single bit, saving you time and reducing waste from misfired holes. It’s a practical upgrade for maintenance teams, electricians and metalworkers looking for durable performance and cleaner results in everyday tasks, from mounting brackets to fabricating enclosure panels. For those prioritising value for money, the M35 cobalt composition translates into longer life in demanding environments and better reliability across repeated use.