50PCS M35 Cobalt Drill Bits HSS - CO Drilling Tools 1 - 3MM
HOT-50Pcs Drillforce Tools M35 Cobalt Drill Bit Set,Hss-Co Drill Set 1-3Mm,For Drilling On Hardened Steel, Cast Iron&Stainless S
M35 Cobalt Steel - Manufactured from M35 cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit.
No Center Punch Needed - the 135° quick-cut points are self-centering and penetrate quickly with less pressure. Will not "walk" or "wander"
For Stainless Steel - Particularly successful in cutting through hard metals such as stainless steel and cast iron, although they can be used for softer materials, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate.
50pcs Set - The set includes 50pcs of metric M35 cobalt steel twist drill bits: 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 10pcs of each size.
Material: Cobalt steel alloy
Cobalt drill bits are not made of pure cobalt, but rather a steel alloy with certain percent cobalt. The 5-percent alloy is known as M35 grade. The cobalt increases the strength of the steel and makes it more heat-resistant.
For Drilling Stainless Steel
This set of M35 cobalt steel drill bits are particularly successful in cutting through hard metals such as stainless steel and cast iron, although they can be used for softer materials, too.
135 Degree Split Point
The flater the drill, the smaller the chip width. This means less force required to remove metal, compared with lower angles like 90° and 118°. This is important on hard stuff, because your power requirements are already more than mild steel, so making the chip load less helps. It also reduces heat since less surface area is generating the cut.
Not Suggested for Hardened Steel, High Carbon Steel and Steels Blended with Impurities
Cooling Liquid Required
Please use with cooling liquid to prolong the working life of the drill bits and to avoid overheating and breakage.
Please be careful when you drill holes with shese needle-like small bits. They're more likely to break than larger ones.
Package Includes :
10PC X 1.0MM drill
10PC X 1.5MM drill
10PC X 2.0MM drill
10PC X 2.5MM drill
10PC X 3.0MMdrill