1 / 7ZOMIYU 70 mm Forstner Drill Bit
The ZOMIYU Forstner drill bit is listed with a 70 mm cutting diameter and a round shank. Its single-bit format suits buyers who need a wide flat-bottom or pocket hole, with the listing recommending a stable drill press or bench drill for bits this large.
At a glance
- The listing describes a multi-tooth edge and centre spur for positioning the bit.
- Intended for flat-bottom and pocket holes, including angled, overlapping and edge-hole applications.
- The manufacturer lists hardwood, softwood, plywood, MDF and composites as compatible materials.
- A standard round shank is described for drill presses, bench drills and handheld drills.
Often bought together

WOBLLMX 5PCS Forstner Drill Bit,Tungsten Carbide Tipped for Wood(15mm-35mm) | For Hard Wood,Soft Wood Woodworking Hinge Cutter Tool Kits for Veneered Plywood Plastic
$16.58

NIBBLAX 35mm Forstner Drill Bit 1-3/8 Inch Forstner Bit Wood Drill Bits | 1-3/8" Forstner Wood Bit for Woodworking (Ø35mm, Length 90mm, Round Shank)
$9.99
Pros and cons
Pros
- A 70 mm cutting diameter is suited to buyers needing a wide hole from one bit rather than a set.
- The claimed centre spur and multi-tooth edge address positioning and chip removal for woodworking holes.
- The round shank is listed as compatible with several common drill types.
Technical specifications
10 specifications| Brand | ZOMIYU |
|---|---|
| Manufacturer part number | CA-ZMY-088 |
| Tool type | Forstner |
| Cutting diameter | 7 centimetres |
|---|---|
| Shank type | Round |
| Finish | Polished |
| Number of packs | 1 |
|---|---|
| Country of origin | China |
| Parcel dimensions and weight | 13.21 x 9.14 x 9.14 cm; 362.87 g |
|---|---|
| Warranty description | 1 Year Manufacturer |
What to know before buying
- For this large-diameter bit, the manufacturer recommends a stable drill press or bench drill. For deep holes, retract the bit periodically for cooling, clamp the workpiece securely and wear eye protection.
What’s in the box
Included- Forstner drill bit
Who is it for?
A good fit for
- Woodworkers making wide flat-bottom or pocket holes in wood products.
- Cabinet and hinge work where a single 70 mm Forstner bit is the required diameter.
- Users with a stable drill press or bench drill and a suitable project for a large round-shank bit.
Less suited to
- Buyers needing a range of hole sizes in a set.
- Users who cannot firmly secure the workpiece or operate a large-diameter bit on a stable setup.

Customer reviews on Amazon
- 5 stars
63% 63% - 4 stars
16% 16% - 3 stars
8% 8% - 2 stars
0% 0% - 1 star
13% 13%
Aggregate ratings lean positive, with most in the five-star category, but a smaller one-star share means the overall picture is not uniformly favourable. Ratings alone do not explain the reasons or establish cutting performance. For a large 70 mm bit, buyers should base suitability on the listed diameter, shank and recommended stable drilling setup.
Frequently asked questions
What is the listed cutting diameter?
The listing gives the cutting diameter as 7 centimetres, while the title describes it as 2-3/4 inches or 70 mm.
What drills is the bit intended to fit?
The manufacturer describes a standard round shank for most drill presses, bench drills and handheld drills. For this large bit, it recommends a stable drill press or bench drill.
What materials and hole types does the listing mention?
It claims use in hardwood, softwood, plywood, MDF and composites, and describes flat-bottom, pocket, angled, overlapping and edge holes.
What precautions does the manufacturer recommend?
Clamp the workpiece, wear eye protection and retract the bit periodically during deep-hole drilling to allow cooling.

Alternative options

WOBLLMX 6PCS Forstner Drill Bit,Tungsten Carbide Tipped for Wood(30mm-60mm) | For Hard Wood,Soft Wood Woodworking Hinge Cutter Tool Kits for Veneered Plywood Plastic
$42.49

MOLLOM 3-1/8" (80mm) Carbide Forstner Drill Bit | 2.0mm Thickness YG8 Carbide Tipped, Hinge Cutter Tool For Hard Soft Wood, Plastic, Plywood, Precise Woodworking
$46.32

2-1/4" | 57mm Forstner Drill Bit,Triple Flute Tungsten Carbide Tipped | For Hard Wood,Soft Wood Woodworking Hinge Cutter Tool Kits for Veneered Plywood Plastic
$20.99

Vearter 1/4''-1-3/8'' 8PCS HCS Forstner Drill Bit Set for Wood, Round Shank | Multi-Tooth Forstner Bits for Woodworking, Wood Drill Bit Set, Hinge Boring Bits for Drilling Solid Wood, MDF, Particleboard
$43.99

Vearter 1/4''-2-1/8'' 16PCS HCS Forstner Drill Bit Set for Wood, Hex Shank | Multi-Tooth Forstner Bits for Woodworking, Wood Drill Bit Set, Hinge Boring Bits for Drilling Solid Wood, MDF, Particleboard
$89.29

Vouyar 2-3/4 Inch Forstner Drill Bit, Triple-Flute Carbide Tipped Forstner Bit for Hard Wood, Soft Wood, Veneered Plywood, Plastic, Drilling Hole Saw Woodworking Hinge Cutter Tool
$46.71

2-1/4" | 57mm Forstner Drill Bit,Tungsten Carbide Tipped - for Hard Wood,Soft Wood Woodworking Hinge Cutter Tool Kits for Veneered Plywood Plastic
$21.39

Amazon Basics 6-Piece Trigger Clamp Set - 2 Pieces 4-Inch, 4 Pieces 6-Inch
$60.36

Saipor 6.8 inch Long Forstner Bit Extension, 3/8-inch Shank Dia | Adding Over 5.6 inch of Drilling Depth to Your Forstner Bit for Wood Turners, Furniture, Carpentry and Construction
$13.99

DTGN Forstner Drill Bit 15/32" 12mm 2 Flutes Tungsten Carbide Green 1Pack | Good for Wood Plastic Plywood Woodworking Hole Saw Cutter with Round Shank
$2,249.00

3-1/2" | 89mm Forstner Drill Bit,Triple Flute Tungsten Carbide Tipped | For Hard Wood,Soft Wood Woodworking Hinge Cutter Tool Kits for Veneered Plywood Plastic
$36.99

TOOLMAYS 5/8" Forstner Bit Set 3PCS | Wood Drilling Round Shank Drilling Cutting Tool for Woodworking
$24.99