Best Spiral Flute Step Drill

DEWALT Drill Bit Set 3 Piece Titanium Nitride Coated Longer Life and Better Chip Removal DWA1790IR

Titanium Nitride Coated two flute spiral design provides longer life and better chip removal for the DEWALT drill bit set.
Split point tip of the drill bit increases speed.
Laser engraved numbers increases step visiblity.

High Speed Steel: Titanium plating combination drill taps are made of high speed steel, which can ensure sharpness, fast execution and maintain strength and efficiency..
Spiral Flute Design: This is a tap drill with a spiral flute design, which has a better chip removal effect..
Processing: The tap can process wood, plastic, aluminum, tin alloy, Mg alloy, and the thickness of the workpiece is less than 5mm..
Chamfer in One : Combination of hole tapping and chamfering, convenient operation, hand drill, bench drill, and hexagonal chuck tapping machine are optional..
Improve Work Efficiency: The drill bit can quickly complete the work, which greatly saves processing steps and time costs, and improves work efficiency..

Material：HSS4241, High hardness, rustproof, solid and durable.
Split Point Tip：Increases cutting speed with self-centering and prevents walking.
Spiral Design：2 Flute spiral blade design makes the cutting faster and smoother, and automatically deburred from the hole when the drill bit is drilled.
Application：Suitable to cut holes in a variety of material like iron plate, aluminum plate, insulation boards, PVC sheet, ect.
Package includes：1 x 6-60mm HSS Groove Step Drill (12 Steps:6mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm).

FTG Parabolic Flute offers wider flute space, dispersing chips away from the cutting edges more rapidly and increasing coolant flow. The parabolic spiral allows chips to flow up quickly leaving less damage to be corrected after drilling. Package contains 3 Piece Same Size 9/64" (#6 screw) Replacement Tapered Drill Bit Only Without Four-cutter Countersink, made to replace the 9/64” bit of #6 Countersink FTG 6810PRB.
FTG Parabolic Flute allows chips to flow up quickly leaving less damage to be corrected after drilling. Improved chip evacuation leads to a better surface finish in the hole. The parabolic drill tip can slip-on wood surfaces.
it is recommended to hold it rigidly and drill slowly until the tip grabs the material.
Higher Quality cutters FTG Parabolic Flute drill bits are manufactured from premium High Speed Steel M2 Grade 6542. Parabolic flutes are constructed with a wider flute shape for increased chip flow.
THIRD-PARTY TESTED High Speed Steel M2 countersink drill bit for wood with tapered drill bits. FTG Parabolic Flute drill bits are premium products, they are higher quality cutters. Due to their unique design, with improved chip extraction, FTG Parabolic Flute drill bits drill holes faster than other drill models.

✅ The step drill bit is made from upgraded high speed steel characterized by well-balanced toughness, wear resistance and red hardness properties for better and faster hole -drilling performance. The titanium coating makes the drill bit more durable so that it can last for years with uncompromised quality..
✅ The spiral dual-flute design prevents metal fillings from flying around and clears chips faster thus it can drill more smoothly without heating up..
✅ The rapid strike tip drills twice as fast as the average step drills and can drill acrylic, PVC, wood, aluminum and iron sheets up to 0.2’’ in thickness..
✅ CORTOOL drill bit is bigger in size so it can drill holes with larger dimensions..

Specifications: Cutting edge diameter (CED): 4mm / 0.157".
Long Tool Life: Made from tungsten carbide, high hardness, high wear resistance, high strength, resistance to bending, anti-impairment, long service life..
Spiral Flute Bits: Spiral flute drill bits reduce cutting force and prevent drill broken, improve the drilling accuracy. Large drill bit chip space, chip resistance, chip smooth, small drilling heat..
Precision: With sharper cutting edge, milling groove and clean surface, the carbide PCB drill bits can work quickly and cleanly, no glitches or scrap left..
Applications: Great for PC boards, plastics, fiberglass, wood, soft metals. Suitable for PCB drilling machines, engraving machine, CNC and high precision special drilling equipment..

Specifications: Cutting edge diameter (CED): 3.5mm / 0.138".
Long Tool Life: Made from tungsten carbide, high hardness, high wear resistance, high strength, resistance to bending, anti-impairment, long service life..
Spiral Flute Bits: Spiral flute drill bits reduce cutting force and prevent drill broken, improve the drilling accuracy. Large drill bit chip space, chip resistance, chip smooth, small drilling heat..
Precision: With sharper cutting edge, milling groove and clean surface, the carbide PCB drill bits can work quickly and cleanly, no glitches or scrap left..
Applications: Great for PC boards, plastics, fiberglass, wood, soft metals. Suitable for PCB drilling machines, engraving machine, CNC and high precision special drilling equipment..

Specifications: Cutting edge diameter (CED): 4.45mm / 0.175".
Long Tool Life: Made from tungsten carbide, high hardness, high wear resistance, high strength, resistance to bending, anti-impairment, long service life..
Spiral Flute Bits: Spiral flute drill bits reduce cutting force and prevent drill broken, improve the drilling accuracy. Large drill bit chip space, chip resistance, chip smooth, small drilling heat..
Precision: With sharper cutting edge, milling groove and clean surface, the carbide PCB drill bits can work quickly and cleanly, no glitches or scrap left..
Applications: Great for PC boards, plastics, fiberglass, wood, soft metals. Suitable for PCB drilling machines, engraving machine, CNC and high precision special drilling equipment..

The step drill bit is made from upgraded high speed steel characterized by well-balanced toughness, wear resistance and red hardness properties for better and faster hole -drilling performance. The cobalt coating makes the drill bit more durable so that it can last for years with uncompromised quality..
The spiral dual-flute design prevents metal fillings from flying around and clears chips faster thus it can drill more smoothly without heating up..
The rapid strike tip drills twice as fast as the average step drills and can drill acrylic, PVC, wood, aluminum and iron sheets up to 0.2’’ in thickness..
CORTOOL drill bit is bigger in size so it can drill holes with larger dimensions..