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Various Sizes: 115 sets of drill bits include 29pcs Fractional Size:1/16” to 1/2” in 1/64th increments; 26pcs Letter Size: A To Z; 60pcs Numbered Size: #1 To #60
Quick and Efficient: The cobalt drill bit set can be used effectively on most soft and hard objects, with a 135 degree point tip and twist design for faster cutting, self-centering to prevent walk-off and faster chip and particle removal
M35 Cobalt Drill Bit: The M35 cobalt drill bit is a durable, sharp and robust drill bit suitable for cutting stainless steel, iron castings, copper, aluminum and other soft metals as well as plastics, wood etc
【Industrial Grade M35】: High-speed steel drill bit set, these drill bits contain 5% cobalt, which is much harder than the high-speed steel used in similar drill bit sets. Fully ground drill bits with smooth surface, high grinding precision, and sharp edges can reduce friction between the drill bit and the material and reduce the temperature of the drill bit during operation.
【Enhanced Precision Design】: Adopts 135° split point tip for faster penetration and less walking. Deep groove twist drill bit design ensures smooth chip evacuation and stable operation, providing accurate results for demanding work.
【Convenient Size Selection】: This 25 pcs M35 drill bit set includes everything you need to meet all your needs, bringing a user-friendly experience. Set includes: 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm,10.5mm,11mm,11.5mm,12mm,12.5mm,13mm， [1-13mm, in 0.5mm increments].
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TRUE M35 GRADE COBALT STEEL: Manufactured from premium High-Speed Steel containing 5% Cobalt (HSS-Co), these bits are heat-hardened to cut through tough abrasive materials. They offer significantly higher heat resistance and wear durability compared to standard HSS bits, making them the ultimate choice for drilling into stainless steel, cast iron, and titanium alloys.
PRECISION 135° SPLIT POINT: Equipped with a 135-degree self-centering split point, these bits bite into the material immediately upon contact. This active cutting tip prevents "walking" or wandering across the work surface and eliminates the need for a pre-punch pilot hole, ensuring accurate and clean starts every time.
FULLY GROUND & EFFICIENT: Unlike roll-forged alternatives, our bits are fully ground for precise dimension accuracy and concentricity. The precision-engineered dual twist flute design ensures rapid chip removal, effectively reducing friction and heat buildup for a smoother, cooler drilling process.
This Cobalt Drill Bit is Typically Capable of Running Three to Five Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes.
Premium M42 8% Cobalt Steel ,68-70 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life.
3 Steps Design for Cutting through Stainless Steel,Hard Metals,Aluminum,Plastic.
PREMIUM M35 COBALT STEEL – Crafted from High-Speed Steel with 5% Cobalt (HSS-CO), this alloy achieves a Rockwell Hardness of up to 67. It offers superior heat resistance and wear durability, lasting up to 12X longer than standard HSS bits, making it the ultimate choice for heavy-duty drilling.
PRECISION 135° SPLIT POINT – Features a self-centering 135° split point geometry that bites into the material immediately. This prevents "walking" or wandering on smooth surfaces, eliminates the need for a center punch, and reduces the pressure required to penetrate.
MASTER OF HARD METALS – Specifically engineered to cut through tough, high-tensile materials. It performs exceptionally well on abrasive metals like stainless steel, cast iron, and titanium alloys, while also slicing effortlessly through softer materials like aluminum, wood, and plastic.
PRECISE 135 DEGREE SPLIT TIP: The cobalt steel twist drill bits feature a 135 degree split drill tip design, enabling rapid penetration with reduced torque requirements. This design effectively minimizes deflection and enhances precision, making it suitable for precise drilling operations on various materials.
M35 COBALT: Our twist drill bit set is made from M35 cobalt alloy steel, offering exceptional hardness and stability. This ensures the drill bits are robust and durable, making them ideal for high intensity drilling tasks.
EXCELLENT GRINDING ACCURACY: Each drill bit is precision ground to ensure a smooth surface. This precision guarantees the drill bit's sharpness and durability over extended use, maintaining consistent performance.
SPIRAL FLUTES: Unscrew tool with spiral flute bit dig into the screw, increasing grip as torque is applied for removal of screws, fasteners and bolts. Strip screw extractor kit gets those stubborn fasteners out.
LEFT HANDED DRILL BIT: Left-hand drill bits are made from cobalt fortified high speed steel for increased durability and service life. Reversed drill bit are used for removing broken bolts or studs turning left to prevent further tightening of the bolt or screw.
BOLT EXTRACTORS: Extraction bits easily remove broken screws, studs, bolts and other fittings effectively. Stripped bolt remover and extractor works on seized bolts, broken fasteners, and commonly called an easy out.
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