5pcs Drill Bit 5.5mm Diameter M35 5% Cobalt HSS for Metal - size: 5.5mm
5pcs Drill Bit 5.5mm Diameter M35 5% Cobalt HSS for Metal - size: 5.5mm
About this item
- 1- PACKAGE CONTENTS - 5 packs of 5.5mm cobalt drill bits, with a 93mm (3.66") overall length and 55mm (2.17") flute length, featuring a 135° split-point angle for reduced walking and enhanced drilling accuracy in metal, wood, and plastic applications.
- 2- MATERIAL - M35 cobalt high-speed steel drill bits, with a cobalt content 5%, deliver superior hardness and durability. Known for outstanding wear and heat resistance, as well as high crack resistance, these bits excel in drilling high-strength and difficult-to-machine metals. Gold finish enhances surface characteristics, boosting wear and corrosion resistance. This treatment contributes to prolonged tool lifespan and improved operational efficiency.
- 3- APPLICATION - For precision drilling in hard metals, hardwoods, composite boards, and carved components, these bits efficiently process dense woods like rosewood and teak. The cutting edges maintain exceptional sharpness even at high RPM, making them perfect for detailed craft carving, mortise-and-tenon joinery, and thin wood sheet drilling - the ultimate tool for woodworking DIY, furniture manufacturing, and artistic carving applications.
- 4- HIGH EFFICIENCY - Cobalt high-speed steel extended service life & reduced wear. Compared to standard HSS drill bits, it offers a 3–5 times longer tool life, significantly lowering the cost per hole. High-efficiency production: Its balanced wear resistance and toughness ensure reliable performance in automated equipment and high-volume machining.
- 5- TAKE NOTICE OF - Position the twist drill perpendicular (90°) to the workpiece surface. Begin drilling at low RPM (500-800) to establish a small hole, then adjust speed based on material: higher for wood, lower for metals. Use cutting fluid to effectively reduce temperature, minimize wear, and extend drill bit life
Overview
- Material: Cobalt Steel
- Finish Type: Gold
- Shank Type: Straight
- Brand: Kozelo
- Tool Flute Type: Spiral
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Reviews
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Michael Turner — Columbus, Ohio
MROVanta made it easier to find several maintenance supplies in one place. The product information helped me compare the available options, and everything I ordered was useful for routine work around our facility.
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Rachel Morgan — Phoenix, Arizona
I was looking for practical supplies for our workshop and found the selection easy to browse. The categories were well organized, and I could quickly locate tools, fasteners, and other items needed for regular maintenance.
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David Collins — Charlotte, North Carolina
The products I selected were suitable for the maintenance tasks we had planned. I appreciated being able to review the specifications before ordering, especially when comparing sizes and compatibility for different applications.
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Amanda Brooks — Denver, Colorado
I ordered a mix of facility and equipment supplies for our work area. The shopping process was straightforward, and the selection covered several everyday maintenance needs without requiring visits to multiple stores.
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