Best Irwin Tools Forstner Drill Bits in 2026

Specs: Diameter 7/8", Length 3-1/2", Rotation RH, Shank 3/8"

Razor sharp serrated edge for fast and flawless cutting

Quality Forged Construction for extended life

Drills flat-bottomed and pocket holes in significantly less time than traditional Forstner bits

Features optimized ultra-sharp cutting teeth specifically engineered to cut through hard and soft woods smoothly and efficiently

Easily drills high-quality flat-bottomed and pocket holes with a fine, smooth finish

Easily Drills High-Quality Flat-Bottomed And Pocket Holes

Features Optimized Ultra-Sharp Cutting Teeth Specifically Engineered To Cut Through Hard And Soft Woods Smoothly And Efficiently

Significantly Reduces Cutting Time Compared With Traditional Forstner Bits

7/8 FORSTER BIT

7/8 FORSTER BIT

7/8 FORSTER BIT

Optimized Cutting Angles For Flat Bottom Holes

Open Tooth Design For Clean Fast Holes

Creates A Fine Smooth Finish

Specs: Diameter 1/4" to 1", Length 3-1/2", Rotation RH, Shank 1/4" to 3/8"

Razor-sharp serrated edges give smooth and flat-bottom holes.

Quality Forged Construction for extended life

Included cutting diameters: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8", 1-1/2", 1-5/8", 1-3/4", 1-7/8", 2" and 2-1/8".

Drill clean and accurate holes in solid wood, plywood and MDF

Constructed from high-speed-steel for quality and longevity

①Specifications: 16 PCS includes 1/4" (6.3mm), 3/8" (9.5mm), 1/2" (12.7mm), 5/8" (15.8mm), 3/4" (19.0mm), 7/8" (22.2mm), 1" (25.4mm), 1-1/8" (28.5mm), 1-1/4" (31.7mm), 1-3/8" (34.9mm) ，1-1/2（38.1mm), 1-5/8(41.28mm), 1-3/4(44.45mm), 1-7/8(47.63mm), 2(50.8mm) and 2-1/8(53.98mm) forstner bits

②Features: Hex Shank is easy to install and tighten ,prevent the bit from slipping. Extra sharp cutting spurs is especially designed for cutting through hard and soft wood or other materials smoothly and efficiently.

③Great Performance: Easily make flat-bottomed and pocket holes with no chipping on any wood or wood products, plastic, polywood and other materials during processing or installation.

Titanium nitride (TiN) coating lasts 2.5x longer than non-coated bits

135 degree split point geometry for faster starts and reduced walking

Impact rated: For use in 1/4 inches Hex impact drivers

Cuts quick, precise holes in stainless steel, mild steel, iron, copper and brass sheet up to 3/16-Inch (5 mm) thick

Split point pilot drill bit prevents bit walking

Integrated flange prevents the operator from drilling beyond the sheet metal

1/2" shank, 6-1/4"es long

This bit comes in an individual wooden box.

Drilling with forstner bits to achieve a flat bottom hole or to start a deep hole turning project like on a larger vase or vessel is essentially impossible with a standard length forstner bit. To remedy this issue we have developed a heavy duty steel extension that allows you to secure a 3/8 inch shank forstner bit into the end collet.

The forstner bit extension gives you additional 5-5/8 inches of reach to bore deeper into your projects. This will help you create larger diameter starter holes or help when you need to drill in just a little further than the standard bit length will allow. The extension can be used with forstner bits on drill presses, lathes with a drill chuck installed (drill chuck not included) or with a power drill.

One of the most common uses for the forstner bit extension is for woodturners who need to bore out starter holes on larger vessels. However, the extension works exceptionally well for projects like salt shakers, pepper mills or even wood turned beverage mugs. Contractors use the extension when they need to bore deep holes for running cables or wires and they also use it for joining larger timbers.

Suitable for hard and softwood, coated chip board, laminates as well as MDF plates

High rotation speed

Precise cutting quality

Advanced technology manufacturing and durable material - Made from Tungsten steel and being hot-treated, the blade is characterized by high accuracy, smooth cutting operation, good resistance to shock and good toughness.

High Quality - Small incision resistance, improve the opening speed, chip easy and no tremor. The perforation is neat, smooth, no broken edge.

Designed for durability and long life, creates a fine smooth finish.

Parabolic Flute design eliminating the need to withdraw the bit until the hole has been drilled through

Can drill up to 1350 holes without sharpening

European Pen Makers Drill Bits made from M2 HSS High Speed Steel for longer service

Specs: Diameter 35mm, Length 3-1/2", Rotation RH, Shank 10mm

Razor sharp serrated edge for fast and flawless cutting

Quality Forged Construction for extended life

Specs: Diameter 1/4" to 1-3/8", Length 3-1/2", Rotation RH, Shank 5/32" to 3/8"

Micro-grain carbide/titanium tips ensure cleaner cuts and long lasting sharpness

Wood case for easy storage and protection.

Easily drill perfect circles into your workpiece

Includes 1/4-inch (2), 3/8-inch, 1/2-inch, 5/8-inch, 3/4-inch, 7/8-inch, 1-inch, 1-1/8-inch, 1-1/4-inch, 1-3/8-inch, 1-1/2-inch, 1-5/8-inch, and 2-inch diameter drill bits

3/8-inch round shank compatible with the majority of drill and drill press chucks

(D) diameter: 15/16

(D) shank: 3/8

Overall length (L): 3-1/2

Extends any Forstner shank bit an additional 4 inches, Swift Bore (Registered Trademark)

Ideal for use with any 3/8" shank bit

High-carbon steel construction, precision ground and polished

Drills flat-bottomed and pocket holes in significantly less time than traditional Forstner bits

Features optimized ultra-sharp cutting teeth specifically engineered to cut through hard and soft woods smoothly and efficiently

Easily drills high-quality flat-bottomed and pocket holes with a fine, smooth finish

8 PCS Forstner Bit Set Specifications: 1/4"(6.35mm), 3/8"(9.52mm), 1/2"(12.7mm), 5/8"(15.9mm), 3/4"(19.05mm), 7/8"(22.2mm), 1"(25.4mm), 1-3/8"(34.9mm)

Kowood C2 Carbide: This forstner bit set tipped Carbide is more stable, durable, and smooth compare with HSS

Kowood forstner bit set designed: Ideal for pocket holes, overlapping holes, and holes at the edge

3-35/64-Inch Overall Length, Right-Hand Rotation.

2 spurs, 2 precision ground cutting edges, long-lasting cutting performance

Drill precise flat bottom holes with no chipping in any thickness of soft wood

PERFECT SIZE - 35mm hinge boring bit for boring concealed cabinet hinge holes

CLEAN HOLES EVERY TIME - Fine blades built into this 35mm forstner bit for euro hinges

Drilling Diameter: 35mm (1.37") Shank Diameter: 9mm (0.35") / Shank Length: 64mm (2.5")

Designed for perfectly smooth, flat-bottomed and splinter-free holes, even in end-grain and through knots

Chrome-steel alloy construction allows the bits to withstand high temperatures during drilling, reducing the risk of burning

Brad point centers bit for easy positioning of hole

【High-Quality Material】: 35mm Hinge Drilling Jig is made of high quality engineering plastic, this hinge hole drill guide is durable.This is a set of drill guide tool used for convenient hinge hole drilling.

【Holes Distance 】: This punch supports 46-47-48-52 mounting screw holes. It has function to drill the pivot holes for the screws of the hinge which are 46mm, 47mm, 48mm or 52mm distance each other.

【Easy to Use】: Simple to use with any drill—no special tools needed. Make cabinet door installation easy! Easy to use, suitable for their own home operation, do not need professionals.

Forstner bit set for drilling holes in softwood or solidwood, plywood, coated chip board, laminates and mdf plates

Includes a 14-piece drill bit set with common bit sizes from 1/4 to 2 inch, plus a carry case; black

Creates a fine smooth finish for durability and long life

【Durability Design 】:The bit includes a center point which guides it throughout the cut and incidentally spoils the otherwise flat bottom of the hole.

【Precisely Cut】:The cylindrical cutter around the perimeter shears the wood fibers at the edge of the bore, and also helps guide the bit into the material more precisely.

【High Quality】:Made from high quality carbide tungsten steel and being hot-treated,sharp edge,high hardness, accurate positioning,high precision,smooth cutting,impact resistance,high toughness.more smooth,less noise.

Drilling with forstner bits to achieve a flat bottom hole or to start a deep hole turning project like on a larger vase or vessel is essentially impossible with a standard length forstner bit. To remedy this issue we have developed an extra long, heavy duty steel extension that allows you to secure a 3/8 inch shank forstner bit into the end collet.

The forstner bit extension gives you additional 8-1/2 inches of reach to bore deeper into your projects. This will help you create larger diameter starter holes or help when you need to drill in just a little further than the standard bit length will allow. The extension can be used with forstner bits on drill presses, lathes with a drill chuck installed (drill chuck not included) or with a power drill.

One of the most common uses for the forstner bit extension is for woodturners who need to bore out starter holes on larger vessels. However, the extension works exceptionally well for projects like salt shakers, pepper mills or even wood turned beverage mugs. Contractors use the extension when they need to bore deep holes for running cables or wires and they also use it for joining larger timbers.

DURABLE MATERIAL: Forstner bit is made of carbon steel, with the advantage of sharp edge, accurate positioning, high precision and stable cutting.

WIDELY APPLICATION: It is suitable for industrial hinge installation, wood processing and maintenance, model production, installation of spherical door, drawers and other occasions. It can easily cut wood, plastic, resin, PVC and other materials

ALL SIZE YOU NEED: 16 PCS includes 1/4" (6.3mm), 3/8" (9.5mm), 1/2" (12.7mm), 5/8" (15.8mm), 3/4" (19.0mm), 7/8" (22.2mm), 1" (25.4mm), 1-1/8" (28.5mm), 1-1/4" (31.7mm), 1-3/8" (34.9mm) ，1-1/2（38.1mm), 1-5/8(41.28mm), 1-3/4(44.45mm), 1-7/8(47.63mm), 2(50.8mm) and 2-1/8(53.98mm) forstner bits