Best Hole Enlarging Drill Bits

Best Hole Enlarging Drill Bits Reviews & Buyer’s Guide


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Top 10 Best Hole Enlarging Drill Bits Review


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Best 10 Hole Enlarging Drill Bits Buying Guide


Bestseller No. 1
CO-Z 5pcs Hss Cobalt Multiple Hole 50 Sizes Step Drill Bit Set with Aluminum Case
  • Please mark the spot that you are to drill for easier drilling and improved drill bits life.
  • All the bits come in a well-organized case for easy transport and storage.
  • Cobalt high speed steel along with the titanium coating ensures extreme durability, will stay new and shiny for years to come.
  • Non-walking drill tip provides fast and smooth drills on steel sheets, aluminum sheets, wood board, plastic board etc. (the board must be smaller in thickness than the height of step drill bits).
  • Different sized shanks ensure compatibility with 1/4, 3/8 and 1/2 in. chuck sizes.
Bestseller No. 2
Irwin Industrial Tools 10220CB Unibit 1/16-Inch Hole Enlarging 8-Steps Cobalt Step Drill Bit
  • Country of manufacture: United States
  • Package Dimensions: 1.016 H x 15.24 L x 6.858 W (centimeters)
  • Made in: United States
  • Power Cutting & Sawing
Bestseller No. 3
OCGIG 6-65mm Large Titanium Coated Step Drill HSS Spiral Groove Cone Drill Bit Hole Cutter
  • Application:Suitable to cut holes in a variety of material like iron plate, aluminum plate, insulation boards, PVC sheet, ect
  • Spiral Design:3 Flute spiral blade design makes the cutting faster and smoother, and automatically deburred from the hole when the drill bit is drilled
  • Material::High Speed Steel(HSS) with Titanium Coated
  • Package includes:1 x 6-65mm HSS Groove Step Drill (13 Steps:6mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm)
  • Self starting:no need for a pilot hole.Cobalt coated to reduce friction and run at cooler temperature.
Bestseller No. 4
Irwin 11581 Unibit21M 20-Millimeter to 34-Millimeter by 1/2-Inch Shank Hole Enlarging Step Drill Bit
  • Maximum material thickness of 5mm
  • This Unibit step drill bit uses a single-flute cutting edge for greater control and true, round holes
  • This Unibit step drill bit uses a single-flute cutting edge for greater control and true, round holes
  • Ideal for drilling holes into thin materials, such as stainless-steel, copper, brass, aluminum, plastic and laminates
  • IRWIN Unibit #21M step drill bit creates holes from 20mm to 34mm with 8 steps
  • These IRWIN Unibit step drill bits have a hex shank to help prevent slipping in the drill chuck
  • Ideal for drilling holes into thin materials, such as stainless-steel, copper, brass, aluminum, plastic and laminates
  • These IRWIN Unibit step drill bits have a hex shank to help prevent slipping in the drill chuck
  • IRWIN Unibit #21M step drill bit creates holes from 20mm to 34mm with 8 steps
  • Maximum material thickness of 5mm
Bestseller No. 5
Raizi 1 Inch Diamond Finger Milling Bits For Enlarging Shaping Holes On Porcelain Tile Marble Granite Milling Tools 1 Pc
  • It is manufactured with top quality raw materials and high end production processes to grant outstanding performances.
  • It is a versatile milling bit designed to enlarge, shape and/or round bevel existing holes in Porcelain, Hard Ceramic, Granite and Marble.and it's also suitable to easily create round side indentation necessary to accomodate pipes or electric wire lines.
  • This is a save money tool because with just one standard core bit and this finger bit you are able to create many different hole sizes, without needing to buy several different core bits.
  • Recommended for Tile Setters, General Contractors, Plumbers and Electricians.
  • It can be used with any 5/8"-11 Thread standard grinder.
SaleBestseller No. 6
COMOWARE Step Drill Bit Set & Automatic Center Punch- Unibit, Titanium Coated, Double Cutting Blades, High Speed Steel, Short Length Drill Bits Set of 5 pcs, Total 50 Sizes with Aluminum Case
  • Design - The split point tip is at 118 degrees to increase the wear resistance. The two flute design provides a smoother cutting, allows the material particles escape easily for a much more clean drilling operation.
  • HSS Titanium Coating - High speed steel along with titanium coating ensures outstanding durability and sharpness, can reduces the friction, runs cooler.
  • Meet Your Demands - With the step drill bits we offered, you can process different kinds of diameter holes, which greatly saves you a lot of trouble.Great for metal/wood/plastic countersunk. Suitable for Home DIY, and General Building/Engineering Use.
  • Set Includes - The drill bits set includes five common sizes for versatility, can fit the majority of brands currently on the market.
  • Easy Organizing - A drill bits holder with size index is included in the metal kit for easy storage and organizing without fear of it falling out.
Bestseller No. 7
uxcell 38mm Diamond Coated Glass Hole Saw Drill Bits for Ceramic Tile Marble Rock Porcelain
  • APPLICATIONS - Perfect for drilling glass, ceramics, porcelain, ceramic tile, porcelain tile, limestone, slate, marble, granite, light stone and fiberglass. (Need to be used at a low speed; Always use lubrication (water) when processing, otherwise the hole saw will burn.)
  • NICKEL PLATED SURFACE - Nickel plating surface can extend the service life and enhance the surface corrosion resistance.
  • SPECIAL DESIGN - Slotted edge makes it more sharp, works more efficient. Side open can remove the waste to keep the drill bit clean.
  • SIZE - 38mm(1.5-inch) Drilling Diameter, 10mm(0.4-inch) Shank Diameter.
  • DIAMOND COATED - Diamond coating enhances the drilling speed, which makes the bit more sharp.
Bestseller No. 8
CO-Z HSS 5PCS Titanium Step Drill Bit Set with Automatic Center Punch, 50 Sizes in 5 High Speed Steel Drill Bits Set for Sheet Metal with Aluminum Case, Multiple Hole Stepped Up Bits for DIY Lovers
  • Automatic Center Punch ----- Delivers an automatic, high-impact, spring-loaded strike when pressed against surface, adjustable cap regulates striking force.
  • Titanium Coating ----- Coated by titanium, this step drill set performs well in heat, corrosion and rust resistance.
  • 50 Size In 5 ----- The bits set includes five standard step drill bits that can replace 50 individual drill bits.
  • A Must-have for Handyman or Professionals ----- Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper and many other types of sheet metal.
  • HSS Steel Construction ----- High-speed steel construction for longer cutting edge life even at extreme temperatures.
Bestseller No. 9
Step Drill Bit Set & Automatic Center Punch 5pcs HSS Cobalt Titanium Step Drill Bit Set, Multiple Hole 50 Sizes High Speed Step Drill Bit Set with Aluminum Case
  • 50 SIZES IN 5 PIECES STEP DRILL BITS: The bits set includes five standard step drill bits that can replace 50 individual drill bits and process 50 different kinds of diameter holes, compatibility with 1/4, 3/8 and 1/2 in. chuck sizes.
  • AUTOMATIC CENTER PUNCH & ALUMINUM CASE: The center punch help you mark the center point that you want to drill, with exquisite aluminum case protects the drill bits not easy to dull and prolongs the drills lifespan.
  • HIGH QUALITY AND WIDELY USE: The step drill bits are make by high speed steel, strong and durable can used for stainless steel sheet, aluminum alloy, plastic material and wood.
  • 135 DEGREE SPLIT POINT AND TWO-FLUTE DESIGN:The drill bit point is designed as X-shape with 135 degree, which can prevent the drill slipping while working in high speed. With two-flute design, provides a faster and smoother cutting.
  • TITANIUM COATING: The Titanium coating resists the drill bits from corrosion and rust, deduces friction making it easily to do multiple drills on surfaces such as plastic, aluminum, copper, stainless steel, and other types of sheet metal.
Bestseller No. 10
CO-Z Large HSS Spiral Groove Step Drill Bit, 12 Sizes Titanium High Speed Steel 1/4" to 2-3/8" Drill Bit for Sheet Aluminium Metal Wood Hole Drilling, Big Multiple Hole Stepped Up Bit for DIY Lovers
  • 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.
  • 12 hole sizes: 1/4; 3/8; 19/32; 3/4; 1'; 1'3/16; 1'3/8; 1'5/8; 1'3/4; 2'; 2'3/16; 2'3/8.
  • Our drill bit is bigger in size so it can drill holes with larger dimensions.
  • 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 dual-flute design prevents metal fillings from flying around and clears chips faster thus it can drill more smoothly without heating up.
We hope you find the Best Hole Enlarging Drill Bits from the above mentioned list. If you did not find your desired product then check out the Hole Enlarging Drill Bits can also be the most sold item on the industry. To conclude, the above mentioned list of items which is most suitable to you.

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