If you are drilling metal, particularly harder metals such as stainless steel you will probably be advised to use M35 bits.

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TTP HARD  drill bits are 5% cobalt throughout. This means they can be sharpened and will drill through hard metals including stainless steel.

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Professional installers, locksmiths and home improvers have been using our drill bits for drilling the hardest of metals.

Cobalt drill bits are drill bits which contain a percentage of cobalt. The two most commom percentages are 5% (also known as M35 ) and 8% (known as M42 )

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If you are using a hand drill then 5% cobalt bits are probably the best drill bits for you as they will certainly drill most hard metals you will encounter including stainless steel.

The more cobalt a drill bit contains the harder the metal you will be able to drill however, the increase in cobalt has a downside in that it makes the drill bit more brittle.

However if you are drilling in a very controlled fashion using a pedestal drill with variable speed controls and you are drilling a very difficult metal 8% may be a better option. However even under controlled drilling you will have the increased chance of breaking the bit.

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Prices : All Prices are United States (US) Dollar ($)             Shipping : We ship from Michigan Warehouse across North America & Canada (Max cart weight 4.2lbs for Canada)

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