Best Triangle Drill Bits of 2026

Jennifer Fraser Avatar
Jennifer Fraser
Last Updated: 10 Feb 2026

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Triangle drill bits are a type of cutting tool used for drilling holes in a variety of materials such as wood, plastic, and metal. These bits have a triangular shape and are designed to provide a clean and precise cut. The sharp edges of the bits make it easier to drill through hard materials, and the unique shape allows for better control and stability. Triangle drill bits come in different sizes, making them suitable for various drilling applications. Whether you're a DIY enthusiast or a professional, these bits can help you achieve accurate and efficient drilling results.

At a Glance: Our Top Picks

Mengshen HSS Step Drill Bit Set 10-45mm Cover #TOP 1
Mengshen HSS Step Drill Bit Set 10-45mm
ftb score rating icon 9.9
SANLEETEK Diamond Core Drill Bit Set 4pcs Cover #TOP 2
SANLEETEK Diamond Core Drill Bit Set 4pcs
ftb score rating icon 9.8
Meichoon HSS M35 Cobalt Step Drill Bit Set Cover #TOP 3
Meichoon HSS M35 Cobalt Step Drill Bit Set
ftb score rating icon 9.6

Top 3 Triangle Drill Bits

#TOP 1

Mengshen HSS Step Drill Bit Set 10-45mm

639510945985
Black
Mengshen HSS Step Drill Bit Set 10-45mm Cover
Mengshen HSS Step Drill Bit Set 10-45mm Spiral Flute, Triangle Shank High Speed Steel Large Bit Nitride Pagoda Step Drill for Carbon Steel, Sheet Iron, Insulation Boards, PVC Boards,Planks, Black

The Mengshen Step Drill Bits are crafted from high-speed steel, making them ideal for materials with a hardness below 25, such as carbon steel and sheet iron. The titanium nitride coating enhances durability, ensuring they last longer during use. With a triangle shank design, these bits fit securely into power tools, preventing slips while you work. The two-flute design allows for faster chip clearance, making your drilling tasks more efficient and less messy. You can even use water for cooling, which further extends their lifespan.

What We Like
Durable high-speed steel construction
Secure triangle shank design
Efficient chip clearance
Suitable for various materials
Cooling option for longer use

SANLEETEK Diamond Core Drill Bit Set 4pcs

SANLEETEK
SAN2-B202-405S13
Triangle Shank set3
SANLEETEK Diamond Core Drill Bit Set 4pcs Cover
Diamond Core Drill Bits Set - 4pcs 6/6/10mm Hole Saw with Triangle Shank+1pc 20mm Hex Shank Beveling Chamfer Bit SANLEETEK for Porcelain Ceramic Tile Marble Granite Artificial Stone

The SANLEETEK Diamond Drill Bits set includes four pieces with 6mm, 6mm, and 10mm diameter drill bits featuring a triangle shank, plus a 20mm beveling chamfer bit with a hex shank. This set is perfect for dry and wet drilling, beveling, enlarging, and shaping holes in materials like ceramic tiles, porcelain, marble, granite, and quartz, making your work more versatile. Thanks to vacuum brazed technology and high-quality diamond grains, you benefit from faster drilling speeds and longer-lasting bits. Additionally, the cooling wax inside the 6 to 10mm bits keeps them cool and lubricated during dry drilling, helping you work efficiently without overheating your tools.

What We Like
Includes multiple drill bit sizes
Suitable for various materials
High-speed, durable diamond grains
Cooling wax prevents overheating
#TOP 3

Meichoon HSS M35 Cobalt Step Drill Bit Set

Q-DC17A
4-20 mm
Meichoon HSS M35 Cobalt Step Drill Bit Set Cover
Meichoon HSS M35 Step Drill Bit 4-20mm, Cobalt Spiral Groove Large Bit Pagoda Step Drill Bit Set Hole Reamer Triangle Handle HSS Co Drilling Counterbore DC17A

The Meichoon Step Drill Bit is crafted from M35 high-speed steel and cobalt, ensuring durability and the ability to effortlessly cut through various materials like steel, aluminium, copper, and plastic. Its triangle shank design fits securely into power tools, preventing slips during use. The innovative two-flute design allows for faster chip clearance, making your drilling tasks smoother. Additionally, the split point tip increases drilling speed while automatically deburring holes, keeping your bit clean and efficient.

What We Like
Durable M35 HSS & Cobalt
Secure triangle shank design
Faster chip clearance
Automatically deburrs holes
Buying Guide Image
Editor's Notes

During our triangle drill bit research, we found 132 triangle drill bit products and shortlisted 3 quality products. We collected and analyzed 5,481 customer reviews through our big data system to write the triangle drill bits list. We found that most customers choose triangle drill bits with an average price of £14.34.

The triangle drill bits are available for purchase. We have researched hundreds of brands and picked the top brands of triangle drill bits, including Mengshen, SANLEETEK, Meichoon.

Written by
Jennifer Fraser Avatar

Jennifer Fraser is a licensed contractor specializing in sales, maintenance, and kitchen, bathroom, and home appliances, tools, and utilities. She owns a store in Leeds where you can get any home and tool appliance. Jenny has a degree in literature, but she combines her knowledge and experience with her degree to publish DIY articles on solving home appliances issues to keep up the family enterprise.