![Makita HSS-Co Metal Drill Bit (Cobalt) [Blister Pack]](http://khmtools.com.ph/cdn/shop/products/cobalt.png?v=1793516188&width=1)
![Makita HSS-Co Metal Drill Bit (Cobalt) [Blister Pack]](http://khmtools.com.ph/cdn/shop/products/cobalt.png?v=1793516188&width=600)
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Cobalt drill bits (HSS-Co) are high-speed steel bits with added cobalt, so they stay hard at high temperatures. Fabricators, welders, maintenance crews and mechanics use them to drill stainless steel, hard steel and other tough metals where standard HSS bits dull quickly.
How to choose a cobalt drill bit
- Single bits or sets: buy single sizes for the holes you drill most, or a set such as the Ingco AKDB1125 (12 pcs), AKDB1195 (19 pcs) or Powerhouse M35 (29 pcs) to cover common sizes.
- M35 grade: bits marked M35, such as the Powerhouse and MPT bits, contain about 5% cobalt and are a common choice for stainless steel.
- Shank: half shank bits such as the Tatara half shank let larger sizes fit a standard drill chuck.
- Brands: Irwin, Makita, Ingco, Tatara, Benzwerkz, Butterfly and MaxSell, from blister packs to the Irwin 600-piece master set.
Use with
Drill at low speed with steady pressure and use cutting oil. For mild steel see HSS metal drill bits, and see step drill bits for sheet metal.
All products from KHM Megatools are genuine.
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