Top 10 Reamer Drill Bit – Step Drill Bits

As an Amazon Associate I earn from qualifying purchases.



Titanium Coated, Short Length Drill Bit, Total 10 Sizes, High Speed Steel, Double Cutting Blades, COMOWARE Step Drill Bit

COMOWARE #ad - Design - the split point tip is at 118 degrees to increase the wear resistance. Hss titanium coating - high speed steel along with titanium coating ensures outstanding durability and sharpness, can reduces the friction, runs cooler.

Suitable for home dIY, and General Building/ Engineering Use. Safety and stability- the 3 flat shank is better clamped on the pistol drill to prevent slippage and shedding during the rotation. 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 steel sheets/ aluminum sheets/ copper/ plastic/ wood board and many other types of sheet metal with ease countersunk.

The two flute design provides a smoother cutting, allows the material particles escape easily for a much more clean drilling operation. Size includes - one drill with 10 steps: 1/4", 3/8", 1-1/8", 7/8", 1/2", 1", 1-1/4", 3/4", 5/8", 1-3/8" can fit the majority of brands currently on the market.
ManufacturerCOMOWARE #ad

2. CO-Z


CO-Z 5pcs Hss Cobalt Multiple Hole 50 Sizes Step Drill Bit Set with Aluminum Case

CO-Z #ad - Cobalt high speed steel along with the titanium coating ensures extreme durability, will stay new and shiny for years to come. Please mark the spot that you are to drill for easier drilling and improved drill bits life. Non-walking drill tip provides fast and smooth drills on steel sheets, wood board, aluminum sheets, plastic board etc. Chuck sizes. All the bits come in a well-organized case for easy transport and storage. Different sized shanks ensure compatibility with 1/4, 3/8 and 1/2 in. The board must be smaller in thickness than the height of step drill bits.
BrandCO-Z #ad
ManufacturerCO-Z #ad
Height6.1 Inches
Length4.33 Inches
Width1.57 Inches
Part NumberCO-Z SDB-0000
ModelCO-Z SDB-0000

3. Neiko


Neiko 10193A Titanium Step Drill Bit Set, High Speed Steel | 3-Piece Set | Total 28 Sizes

Neiko #ad - Set includes: bit #1 6 steps: 3/16", 3/8", 15/32", 5/8", 13/32", 7/16", 5/16", 3/8", 9/32", 9/16", 1/2", 1/2"; bit #2 13 steps: 1/8", 5/32", 11/32", 1/2"; bit #3 9 steps: 1/4", 1/4", 11/16", 7/32", 7/16", 3/16", 5/16", 1/4", 5/16", 3/8", 7/16", 3/4".

Titanium | high speed steel: classic high speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of sheet metal.1135° split point tip: increases cutting speed with self-centering and prevents walking. Two-flute design: clears chips faster and allows particles to escape easily. Tri-flatted shank: fits into power tools chuck securely and eliminates slip.
BrandNeiko #ad
ManufacturerRidgerock Tools Inc. #ad
Height1 Inches
Length6 Inches
Weight0.25 Pounds
Width4 Inches
Part Number10193A

4. Viking Drill & Tool


Viking Drill and Tool 12270 CR-4SP 4 piece Set Type 50-UB Standard Flute Magnum Super Premium Car Reamer

Viking Drill & Tool #ad - Includes: 3/8, 1/2, 5/8, 3/4 straight flute reamer. Set premium high speed Steel Car Reamer Standard Flute 3-Flats on Shank. Set, hss car reamer Standard Flute 3-Flats on Shank. 4 pc. Reamers designed for enlarging previously formed or drilled holes. 4 pc. Four piece reamer set - gold oxide.
BrandViking Drill & Tool #ad
ManufacturerViking #ad
Height1.75 Inches
Length8 Inches
Width5 Inches
Part Number12270

5. Neiko


Neiko 10181A Quick Change HSS Titanium Coated Spiral Grooved Step Drill Bit 3-Piece Set | 31 Step Sizes in One Kit

Neiko #ad - Constructed of industrial high speed steel with titanium nitride coating for durability and strength to punch and drill clean holes in materials like plastic, aluminum, copper, wood, stainless steel and other types of sheet metal.

Quick change 1/4-inch hex shank makes for easy, convenient bit switches and is compatible with impact ready power tools. Assortment comes with 3 drill bits of a combined 31 sizes to add to your drilling arsenal: 13 step drill 1/8, 1/4, 11/32, 9/32, 3/4, 13/16, 1/2-inch and 12 step drill 3/16, 5/32, 3/8, 3/8, 15/32, 5/8, 3/8, 7/16, 5/16, 7/32, 5/16, 1/4, 1/2-inch 6 step drill 3/16, 9/16, 5/16, 7/16, 11/16, 1/4, 1/2, 3/16, 7/16, 13/32, 7/8-inch. Two-flute spiral grooved design deburrs chip, dust and debris for clearance and smooth cutting. Unibit split point tip accelerates cutting speed while preventing angled walking away from center line of bore.
BrandNeiko #ad
ManufacturerNeiko #ad
Part Number43219-22909

6. Champion Cutting Tool Corp


Champion Cutting Tool Brute Platinum Car/Maintenance Reamer: SA80-1/2

Champion Cutting Tool Corp #ad - Brute platinum heavy duty high speed steel reamers enlarge and align existing holes through steel, stainless steel, tough alloys, and aluminum.1/2" straight shank for use in 1/2" Chuck Power Tool. Popular applications include mainteance use in steel erection/fabrication, and automotive truck & trailer industries. Left hand helix/right Hand Cut sheers chips away from operator. Features safety collar stop to prevent over penetration and operator loss of stability.
BrandChampion Cutting Tool Corp #ad
ManufacturerChampion Cutting Tool #ad
Height1 Inches
Length1 Inches
Width1 Inches
Part NumberSA80-1/2

7. Triumph Twist Drill Co.


Black and Bronze Oxide Coated, Triumph Twist Drill Co. 072283 5/8 Diameter TCR High Speed Steel Drill, 1-Pack

Triumph Twist Drill Co. #ad - 1/2-inch diameter shank. High speed steel for general purpose drilling in a variety of materials. Made in the U. S. A. Alignment reamer for enlarging a hole. Tapered construction or alignment reamer with 1/2 inch 3-flatted shank with 4-1/2 inches of flute length.
BrandTriumph Twist Drill Co. #ad
ManufacturerAJ Hanson - Tools & Home Improvement #ad
Height0.63 Inches
Length6.56 Inches
Width0.63 Inches
Part Number72283

8. Toolcool


Deburring External Chamfer Tool Drill Bit Remove Burr Repairs Tools Quick Release Hexagon Shank Black

Toolcool #ad - Simple operation, and then slightly applying pressure to remove the burr;convenient to use, using the lowest speed on the drill bit, save more than 80% time.

Quickly repairs damaged bolts and tightens the nuts in place;simplifies the repair process, eliminates the need to replace expensive or hard-to-find hardware. This deburring chamfer tool is made of CR12MOV steel, high strength and hardness. Effective on stainless steel, fiberglass, hardened steel, brass, wood, mild steel, copper, aluminum, plastic. This deburring tool bit works by a way of shearing metal layer by layer;safety conscientious design means no cut hands, no sparks, and no burns.
BrandToolcool #ad
ManufacturerToolcool #ad



1” by 1/16th Increment, Best Choice 8-Piece 1/2” Shank Silver and Deming Drill Bit Set in Aluminum Carry Case, High Speed Steel HSS | SAE Size 9/16”

EFFICERE #ad - Superior gold titanium and black nitride dual coating finish holds up lubricant better for smoother drilling, and is 80% more durable and corrosion resistant than regular black enamel finish.

135° split point design at tip increases cutting speed with self-centering feature and prevents drill walking or wobbling. Premium cobalt high speed steel construction for proven capability and durability to drill holes in wood, plastic, copper, stainless, aluminum, sheet metals and many other types of materials. 1/2 inch reduced shank with tri-flatted end locks onto 3-jaw power tools chuck more securely and eliminates slips. Set includes 8 pieces 6” long silver & deming drill bits in a heavy duty aluminum storage case for easy carrying and organization: 9/16”, 15/16”, 13/16”, 3/4”, 5/8”, 11/16”, 7/8”, 1”.
Part NumberDL-001

10. Klein Tools


1/2-, 3/4- and 1-Inch, Klein Tools 85091 Power Conduit Reamer with Improved Bit Retention

Klein Tools #ad - Ream 1/2-inch 13 mm, 3/4-inch 19 mm and 1-Inch 25 mm conduit and install fittings in a fraction of the time. Designed to fit into power drill chucks and quick release adapters. Includes precision engineered replaceable reaming blade. Improved bit retention. Reduce time on projects with large quantities of conduit runs.
BrandKlein Tools #ad
ManufacturerKlein #ad
Height2 Inches
Length5.75 Inches
Width2 Inches
Part Number85091KLE