The Diablo 4-1/2" Diamond Segmented Masonry Cut-Off Blade is engineered for professionals who demand lasting performance when cutting through concrete, concrete with rebar, brick, and cinder block. Designed to fit standard angle grinders, this segmented diamond disc delivers up to 2X longer cutting life compared to standard diamond cut-off discs, making it a reliable choice for demanding masonry cutting applications where durability and consistent results matter most.

Key Features

• Taller segments with superior quality diamonds and an ultra-durable bond to the disc body - provides up to 2X longer cutting life so you spend less time swapping blades on the job
• Hardened disc body absorbs vibration and increases impact resistance - delivers superior quality cuts in hardened materials and reduces operator fatigue during extended use
• Optimized diamond segments and diamond distribution ensure constant diamond exposure - maximizes performance in high speed cutting applications so cuts stay clean and efficient throughout the blade's life
• Compatible with 7/8", 20mm, and 5/8" arbors - fits a wide range of angle grinders, reducing the need for adapters or additional hardware
• Includes two bushings (20mm and 5/8") - ready to mount on multiple tool configurations right out of the package
• Rated for both dry and wet cutting - gives you the flexibility to match your cutting method to the job site conditions
• Maximum RPM of 13,280 - engineered to perform safely at the high speeds typical of 4-1/2" angle grinders
• 2.2mm kerf - minimizes material waste and keeps cuts precise through tough masonry surfaces

Why This Product

• Up to 2X longer cutting life versus standard diamond cut-off discs means fewer blade changes and lower cost per cut on concrete, brick, and block projects
• Industrial-grade diamonds paired with a hardened disc body handle extreme applications - including cutting concrete with rebar - without sacrificing cut quality or blade integrity
• Multi-arbor compatibility (7/8", 20mm, 5/8") with two included bushings makes this blade a versatile fit for a variety of angle grinder brands and models without buying extra hardware
• Approved for both dry and wet cutting conditions, this segmented masonry wheel adapts to different job site setups and materials, from block walls to rebar-reinforced slabs

Specifications

• Brand: Diablo
• Manufacturer Part Number: DMADS0450
• Product Group: Diamond Wheels
• Category: Segmented
• Diameter: 4-1/2"
• Arbor: 7/8", 20mm, 5/8"
• Kerf: 2.2mm
• Rim Design: Segmented
• Maximum RPM: 13,280
• Compatible Tools: Angle Grinder
• Materials: Concrete; Concrete with Rebar; Brick/Block
• Pack Quantity: 1

Approved Applications

• Concrete
• Brick
• Block

What's Included

• 1x 4-1/2" Diamond Segmented Masonry Cut-Off Blade
• 1x 20mm bushing
• 1x 5/8" bushing

Frequently Asked Questions

What materials can this Diablo diamond blade cut?

This blade is designed to cut concrete, concrete with rebar, brick, and cinder block. It is suited for a wide range of masonry cutting tasks encountered on construction, renovation, and hardscaping projects.

Can this blade be used for both dry and wet cutting?

Yes. The Diablo DMADS0450 is approved for both dry and wet cutting, giving you the flexibility to use water cooling when needed or cut dry depending on your job site setup and the material being cut.

Which angle grinder arbor sizes does this blade fit?

This blade is compatible with 7/8", 20mm, and 5/8" arbors. Two bushings - a 20mm and a 5/8" bushing - are included in the package so the blade can be mounted on most standard 4-1/2" angle grinders without purchasing additional adapters.

What is the maximum safe operating speed for this blade?

The maximum rated speed is 13,280 RPM. Always verify that your angle grinder's rated speed does not exceed this limit before use to ensure safe operation.