1 x 3.3mm HSS Cobalt JOBBER Drill BIT - for Drilling Stainless Steel, CR-NI & Hard Steel- Choice of 30 DIAMETERS - 1mm to 13.0mm

Product Information

I used this to drill through a Shimano MTB bicycle crank bolt after it had defeated my cheap metal drill bit. The following are trademarks for one or more DEWALT power tools, accessories, anchors and concrete adhesives: The yellow and black color scheme; the “D”-shaped air intake grill; the array of pyramids on the handgrip; the kit box configuration; and the array of lozenge-shaped humps on the surface of the tool. These precision-ground drill bits enable up to 40% faster drilling and up to 50% lower feed pressure than standard-ground HSS drill bits with a chisel edge.

Brought to you by RS PRO, a range of jobber drill bits suitable for high-speed metal, wood and plastic drilling. Make the most of your storage with BUNKER - choose from modular options, 4 clever ready-made combinations or stylish roller cabinets.

Metal drill bits ground from solid extremely heat resistant cobalt-alloyed high speed steel produced according to DIN 338. Made from cobalt alloy, these drill bit are highly durable and heat resistant providing extended the life of the drill bit.

I used the drill on a very low speed, and whilst it was effective to begin with, the bit became blunt before I could drill through the bolt. The Irwin Metric HSS Cobalt Drill Bits are perfect for drilling stainless steel and other high alloys. As a standard drill can spin upwards of around 500 - 700rpm, the friction can cause a substantial build-up of heat.Precision engineered steel drill bits, with 5% cobalt shaft, for use on tough materials and hard steel, including stainless steel. We do this to ensure our couriers deliver to the right person at the right address, to ensure your goods are not lost or stolen. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards; they’re only given the RS PRO seal of approval if we’re confident of their exceptional quality, which means you can be confident too.

I blunted it yesterday after my 16th hole in mild steel sheet (re-drilled 6mm holes to hold casters).Manufactured to DIN338 standards, with a 135 degree split point tip for drilling without pre-centring.