M35 Cobalt Steel - Made of M35 cobalt steel, with added molybdenum and cobalt, creates a hardened alloy, measuring hardness up to 67, for much more cutting and extended tool life, up to twelve times greater than an average drill bit. No centering required - 135° cutting points are self-centering and penetrate quickly with less pressure. Do not \"go\" or \"walk\"
For Stainless Steel - Particularly effective for cutting hard metals such as stainless steel and cast iron, but can also be used for softer materials. Not for hardened steel/high-strength steel. Try adjusting the RPM when it doesn't penetrate.
50-piece set - The set includes 50 pcs M35 cobalt steel metric twist drill bits: 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 10 pcs of each size.
Cobalt drill bits are not made of pure cobalt, but of a steel alloy containing a certain percentage of cobalt. The 5% alloy is called M35 grade. Cobalt increases the strength of the steel and makes it more resistant to heat.
Color: Gold
Material: Alloy steel
For drilling in stainless steel
This M35 cobalt steel drill bit set is particularly effective for cutting hard metals such as stainless steel and cast iron, but can also be used for softer materials.
135 degree split point
The larger the chip width, the flatter the drill. This means that less force is needed to remove the metal, compared to lower angles like 90° and 118°. This is important for tough jobs as your power requirements already exceed soft steel. Reducing the chip load therefore helps. This also reduces heat as less surface area generates the cut.
Not recommended for hardened steel, high-strength steel and steel mixed with impurities
Coolant required
Use it with coolant to extend the life of the bits and prevent overheating and breakage.
About breakage
Be careful when drilling holes with small metal bits. Needle shape. are more prone to breaking than larger ones.
Package includes:
10 pcs x 1.0 mm drill bit
10 pcs x 1.5 mm drill bit
10 pcs x 2.0 mm drill bit
10 pcs x 2.5 mm drill bit
10 pcs x 3.0 mm drill bit
Only the above package content, other products are not included.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.