Best Straight Long Drill Bits in 2026

Features a full-cone threaded tip for fast and effortless drilling

Contoured paddle for fast chip removal

Hex shank power groove to reduce slippage

The item is Bosch Daredevil DSBE1012 12-inch drill bit extension

Used for power tool accessories, drill bits & accessories

The product is manufactured in China

✔️【WOOD AUGER BIT SIZE】: 3/8" (Diameter)  x 9"(Overall Length)

✔️【SCREW POINT TIP】: Screw Point Tip Allows Bit to Self-feed for Easy Drilling Fast Boring in Hard and Soft Wood.

✔️【MATERIAL】: Made of High Carbon Steel with Threaded Tip.

Efficient & Smooth Drilling: This diamond core drill comprises premium aluminum alloy components, and high-quality diamond grits ensure a longer coring life. Diameter: 2.5 in / 63.5 mm, Drilling Depth: 9.5"/241.3 mm. A pilot bit and an extra 4.5"/114.3 mm blade is included to increase your efficiency.

Engineered for Exact Fitting: With a 5/8"-11 universal thread, this core drill bit allows easy and rapid assembling to a standard fixed core or handheld drilling machine. It is compatible with most concrete core drill devices.

Humanized Structure: Our diamond dry coring bit features chip removal holes, highly regular sawteeth, and concentric axes design. The innovative construction provides high drilling performance while keeping a long lifetime.

Diamond core drill bit adapter hexagonal 1/2" to 1 1/4" 7 male threaded for core drill bits hole saw - - OVERALL LENGTH - 3 3/4". Extra long length to fit core bit adapter

Connects to core bits with 1 1/4" 7 threaded female arbor, and changes to connector to 1/2" hexagonal

1 1/4" 7 male length 1 1/2" - OVERALL LENGTH - 3 3/4"

{Specification} 4 inch core drill bits for concrete Wet Drilling Core Bits

{Thread} 1-1/4" - 7 threaded arbor

{Drilling Depth} 14" with mesh segments. Fast,smoothly, long life

[Finish Your Projects]: Smooth out edges and other imperfections on your projects or crafts with the ABN 0.1 to 0.8-Inch Deburring Chamfer Tool; Create smooth, beveled edges on your art, home, or vehicle projects with stainless steel deburring tool

[Perfect Cut Every Time]: Deburr chamfer bit repairs damaged bolts and fasteners to get the most uses; Deburring repair tool cuts rough edges off fresh-cut pipes and bolts to create a beveled edge

[Designed for Different Materials]: Metal and PVC deburring tool can be used on stainless steel, hardened steel, mild steel, copper, brass, aluminum, fiberglass, wood, and plastic; Use copper deburring tool on round bars, nuts, bolts, or rebar 0.1 to 0.8-inch (3 to 19mm) in diameter

Heavy duty. pro grade, vacuum brazed diamond hole saw for quartz, granite, concrete, cinder block, brick drilling.

Diameter is 1-3/8 inch with 5/8 inch - 11 threaded connection, maximum depth of cut is 1-3/8 inches.

Diamond vacuum brazed commercial grade, long life diamond core drill bit hole saw. For heavy duty professional applications.

Exceptional Quality Pro Series Diamond Core Hole Saw 3 Inches

Drill 100+ Holes with A Single Tool, Ultimate Performance Dry or Wet Use - Fast and Clean Holes in Seconds

Secure and Strong 5/8"-11 Threaded Connection for Angle Grinders

High-Quality, Professional-Grade Diamond Hole Saw: Our 4-inch diamond hole saw features pro-grade quality and utilizes vacuum brazed technology for exceptional performance and durability.

Versatile and Efficient: With high-speed drilling capabilities, this diamond hole saw can handle a wide range of materials, including concrete, granite, quartz countertops, porcelain ceramic tile, brick, cinder blocks, and pavement. It's a versatile tool that can be used for various applications.

Increased Cutting Depth and Threaded Connection: Enjoy an increased depth of cut of 1-3/8 inches, allowing you to tackle thicker materials effortlessly. The 5/8 inch - 11 threaded connection ensures a secure and stable fit. We also provide an adapter for drill chuck inclusion, making it compatible with standard 1/2 inch drills.

[Finish Your Projects]: Smooth out edges and other imperfections on your projects or crafts with the ABN 0.5 to 1.4-Inch Deburring Chamfer Tool; Create smooth, beveled edges on your art, home, or vehicle projects with stainless steel deburring tool

[Perfect Cut Every Time]: Deburr chamfer bit repairs damaged bolts and fasteners to get the most uses; Deburring repair tool cuts rough edges off fresh-cut pipes and bolts to create a beveled edge

[Designed for Different Materials]: Metal and PVC deburring tool can be used on stainless steel, hardened steel, mild steel, copper, brass, aluminum, fiberglass, wood, and plastic; Use copper deburring tool on round bars, nuts, bolts or rebar 0.5 to 1.4-inch (13 to 36mm) in diameter

{Specification} Core Bit Adapter 1 1/4"-7 female thread to 5/8"-11 male thread

{Application} Designed for using smaller diameter wet core bits or all the size of the dry core bits that have the 5/8"-11 female threaded using a Core Drill.

{Working method} Using smaller diameter core bits threaded at 5/8"-11 on a core drill machine threaded at 1-1/4"-7.

Efficient & Smooth Drilling: This diamond core drill comprises premium aluminum alloy components, and high-quality diamond grits ensure a longer coring life. Diameter: 2 in / 50.8 mm, Drilling Depth: 9.5"/241.3 mm. A pilot bit and an extra 4.5"/114.3 mm blade is included to increase your efficiency.

Engineered for Exact Fitting: With a 5/8"-11 universal thread, this core drill bit allows easy and rapid assembling to a standard fixed core or handheld drilling machine. It is compatible with most concrete core drill devices.

Humanized Structure: Our diamond dry coring bit features chip removal holes, highly regular sawteeth, and concentric axes design. The innovative construction provides high drilling performance while keeping a long lifetime.

MULTIPURPOSE - designed to drill concrete, concrete with light steel reinforcement or hard masonry

HEAVY DUTY - embedded diamond concentration guarantees longer core life and efficient drilling

ARBOR SIZE - 1-1/4"-7 threaded arbor