HARFINGTON 10Pcs Cobalt Drill Bits Double Ended 3.5mm/0.137" M35 High Speed Steel Twist Drill Bit Stubby Body for Hardened Steel Wood Plastic Cast Iron

Cobalt drill bits are mainly made of M35 high-speed steel, which is strong, has a long service life, and also contains 5% cobalt for increased wear resistance and durability.The double ended cobalt drill features a 135-degree split point design, which saves time and effort for fast and accurate drilling, no center punch is required, and the cutting edge is finely ground to meet different cutting precision.Double-head design brings double durability, easy to match with other electric drills, such as bench drill, hand drill, impact drill, etc. (not included)It is very suitable for drilling through hard metals such as stainless steel, steel, iron, metal plate and aluminum alloy, plastic, resin plate, wood and other softer materials.

• Size - The Drill Bits Double Ended is about 3.5mm/0.137" in diameter, 13mm/0.51 inch in flute length, and about 50mm/2inch in length. The sufficient quantity can meet your daily use needs; please pay attention to control the speed, pressure and heat when using the drill bit.
• Material - Cobalt drill bits are mainly made of M35 high-speed steel, which is strong, has a long service life, and also contains 5% cobalt for increased wear resistance and durability.
• Feature - The double ended cobalt drill features a 135-degree split point design, which saves time and effort for fast and accurate drilling, no center punch is required, and the cutting edge is finely ground to meet different cutting precision.
• Usage - Double-head design brings double durability, easy to match with other electric drills, such as bench drill, hand drill, impact drill, etc. (not included)
• Application - It is very suitable for drilling through hard metals such as stainless steel, steel, iron, metal plate and aluminum alloy, plastic, resin plate, wood and other softer materials.