Best Triangle Core Drill Bits of 2026

The BRSCHNITT Diamond Core Bit is a high-quality tool designed for dry drilling holes through hard porcelain tile, ceramics, granite, marble, masonry, concrete, glass, and hard plastic. With a diamond height of 10mm and a total length of 65mm, this 1" (25mm) core drill bit is constructed with high-grade diamond grit for effortless cutting and improved durability. The special spiral groove design at the top of the bit helps with chip removal, while the wax inside the drill bit aids in cooling and lubrication. The triangle shank allows for easy attachment to any electric drill, hand drill, or bench drill. The BRSCHNITT Diamond Core Bit is the perfect choice for professionals and DIY enthusiasts looking for a reliable and efficient drilling solution.

The LEKOMESH Diamond Drill Bits set includes 11 pieces designed for efficient drilling in various materials like porcelain tile, granite, and marble. With high-quality diamond and steel construction, these bits provide fast and smooth drilling, allowing you to complete your projects more quickly. Their durability ensures a long lifespan, reducing the need for frequent replacements. Additionally, whether you choose dry or wet drilling, you can expect less chipping, giving you cleaner results. The included portable suitcase makes it easy to carry and store the bits, keeping them protected and organized.

HIGHDRIL Dry Diamond Core Drill Bit is a versatile drilling tool that can be used for various materials such as concrete, granite, marble, glass, porcelain tile, masonry, and brick. With a diameter of 25mm (1") and a diamond length of 10mm, this drill bit is designed for efficient and precise drilling. The vacuum brazed diamond technology allows for both dry and wet drilling, giving users the flexibility to choose the drilling method that suits their needs. The triangle shank design ensures a secure grip, preventing the drill bit from slipping out easily. Whether you are using a hand drill or a bench drill, the HIGHDRIL Core Drill Bit is a reliable choice for your drilling needs.

The BRSCHNITT Diamond Drill Set offers a variety of diamond drill bits ranging from 6mm to 100mm, each featuring a durable 10mm diamond height and a convenient triangle shank for secure grip during use. It also includes smaller bits with hex shanks designed for precise drilling, with workable lengths up to 46mm. The set comes with a chamfer bit that has a sharp 60-degree top angle, perfect for smoothing edges. These bits are ideal for drilling through tough materials like porcelain, ceramic, granite, marble, and even glass. Using water while drilling can help extend the life of the bits, making this set versatile and long-lasting for your projects.

The LEKOMESH Diamond Drill Set includes 11 pieces with various sizes to help you drill through tough materials like porcelain tile, granite, and marble. This set is designed for both dry and wet drilling, with wet drilling extending the life of the bits. The drill bits are crafted using vacuum brazed diamond technology, ensuring they are strong and long-lasting. You’ll appreciate the smooth and fast drilling experience, which reduces chipping and speeds up your work. These bits are compatible with hand and bench drills, making them a versatile choice for your drilling tasks.

The DAYDOOR Diamond Hole Saw offers a versatile set with two 25mm diamond bits and a hex wrench, perfect for your home or commercial projects like renovations and repairs. It includes a removable pilot drill bit that helps you start holes precisely on smooth surfaces, preventing slips for cleaner results. Made from high-carbon steel with diamond grit, this tool is built to last, resisting wear and rust so you can rely on it over time. Its smart design features grooves for quick debris removal and heat dissipation, plus a secure shank that keeps the bit steady during use, ensuring safer and more accurate drilling.

The SHDIATOOL Core Bits Set includes 11 pieces, featuring various sizes suitable for drilling porcelain, marble, granite, and more. The triangle shank design allows compatibility with drill machines. These sets are versatile, catering to both dry and wet drilling needs. With high-quality diamond and steel construction, they offer efficiency and durability. It's important to operate them within the recommended RPM range for optimal performance.

The BGTEC Diamond Drill Bits kit offers a versatile set of 12 triangular shank diamond drill bits in various sizes, perfect for drilling clean holes in materials like porcelain, ceramic, granite, and marble. The upgraded design features high-quality diamond particles that speed up your drilling while ensuring durability, lasting 3 to 5 times longer than ordinary bits. The triangle-shaped shank provides a more secure grip in your drill, reducing slippage and increasing stability. Additionally, the kit includes a diamond chamfer bit that lets you easily smooth, shape, or enlarge holes after drilling, giving you a professional finish on your tile or stone projects.

The BeQell Diamond Drill Kit includes 10 different sizes of diamond core drill bits, perfect for drilling through tough materials like porcelain, ceramic, marble, granite, and more. With its unique serrated tooth design, the bits cut more sharply and reduce resistance, making your drilling faster and more precise. The kit is built for high performance, able to handle high heat even without water lubrication, so you can work efficiently without worrying about overheating. Plus, the bits have slots that make it easy to remove the drilled plugs, saving you time and effort during your projects.

The Toolocity Core Bit Adapter is a versatile tool that allows you to transform a 5/8"-11 female arbor to a 3/8" Triangle male shank. This adapter is compatible with all tools that have a 5/8-11 female thread, making it suitable for a wide range of applications. It is specifically designed for use with diamond core bits and back holders. With this adapter, you can easily connect your core bits to your tools, providing a secure and reliable connection. This convenience allows you to efficiently drill holes in various materials, such as concrete or stone. The Toolocity Core Bit Adapter is a must-have accessory for any professional or DIY enthusiast who needs to work with core bits.