The Diablo 4" Diamond Turbo Masonry Cut-Off Disc is a professional-grade cutting disc engineered for demanding masonry work including concrete, brick, block, and cinder block applications. Designed for use with angle grinders, this continuous rim turbo disc from Diablo delivers up to 2X longer cutting life compared to standard diamond cut-off discs, thanks to industrial-grade diamonds bonded to a hardened disc body. Whether tackling dry cuts on a job site or wet cutting in controlled conditions, this 4-inch diamond wheel provides the precision, durability, and speed that trades professionals depend on.

Key Features

• Superior quality diamond edge rim design with an ultra-durable bond to the disc body delivers up to 2X longer cutting life - meaning fewer disc changes and lower cost per cut on masonry projects
• Ultra-thin constant contact continuous turbo rim design provides precise cuts at high rates of speed - ideal for clean, accurate cuts through concrete, brick, and block without chipping or rough edges
• Hardened disc body absorbs vibration and increases impact resistance - delivers superior quality cuts in hardened materials even under extreme conditions, reducing operator fatigue
• Compatible with 7/8", 20mm, and 5/8" arbors - fits a wide range of angle grinders so you are not limited to a single tool brand or configuration
• Includes two bushings (20mm and 5/8") - ready to mount on multiple grinder types right out of the package without purchasing additional adapters
• Supports both dry and wet cutting - gives you flexibility to work in different job site environments and application requirements
• Maximum RPM of 15,250 - rated for high-speed angle grinder use so you can cut efficiently without exceeding safe operating limits
• Kerf of 0.08" - an ultra-thin kerf minimizes material waste and reduces cutting resistance for faster throughput

Why This Product

• If you regularly cut through hardened masonry materials like concrete or cinder block, the industrial-grade diamond construction and up to 2X longer disc life mean you replace discs less often - saving both time and money on consumables.
• The turbo rim design combines constant contact with high-speed cutting, making this disc a practical choice when you need clean, precise cuts through brick or block without sacrificing speed.
• With arbor compatibility across 7/8", 20mm, and 5/8" sizes and two included bushings, this disc works with most standard angle grinders, eliminating the need to source additional adapters before getting to work.
• Rated for both dry and wet cutting applications, this diamond masonry disc adapts to the conditions of your job site rather than requiring a separate disc for each cutting method.

Specifications

• Brand: Diablo
• Manufacturer Part Number: DMADT0400
• Product Group: Diamond Wheels
• Category: Turbo
• Diameter: 4"
• Size: 1 1/8"
• Arbor: 7/8", 20mm, 5/8"
• Kerf: 0.08"
• Rim Design: Turbo
• Maximum RPM: 15,250
• Compatible Tools: Angle Grinder
• Materials: Concrete; Brick/Block; Masonry
• Pack Quantity: 1

Approved Applications

• Concrete
• Brick
• Block

What's Included

• 1x 4" Diamond Turbo Masonry Cut-Off Disc
• 1x 20mm bushing
• 1x 5/8" bushing

Frequently Asked Questions

What angle grinder arbor sizes does this disc fit?

This Diablo diamond turbo masonry disc is compatible with 7/8", 20mm, and 5/8" arbors. Two bushings - a 20mm and a 5/8" - are included in the package so the disc can be mounted on most standard angle grinders without purchasing separate adapters.

Can this disc be used for wet and dry cutting?

Yes. The Diablo DMADT0400 is rated for both dry and wet cutting applications, giving you the flexibility to use it in a variety of job site conditions when cutting concrete, brick, block, or other masonry materials.

What is the maximum safe operating speed for this disc?

This diamond turbo masonry cut-off disc has a maximum rated speed of 15,250 RPM. Always ensure your angle grinder's operating speed does not exceed this limit to maintain safe and effective cutting performance.

How does the turbo rim design improve cutting performance?

The ultra-thin constant contact continuous turbo rim design allows the disc to maintain consistent contact with the material throughout the cut. This delivers precise cuts at high rates of speed and, combined with the industrial-grade diamond edge and ultra-durable bond to the disc body, achieves up to 2X longer cutting life compared to standard diamond cut-off discs.