4-1/2 Inch Segmented Diamond Saw Blades 2-Pack, for Angle Grinder

The Rongda 4-1/2 Inch Segmented Diamond Saw Blade 2-Pack is built for cutting masonry, stone, and tile with angle grinders or small saws. It gives DIYers and jobsite workers an affordable way to tackle dense materials without dulling blades immediately. The set includes two blades featuring a hardened alloy steel core designed to steady the cut and minimize tool vibration.

A standout feature is the 10mm tall diamond segment height, which offers more wearable material than standard 7mm segments for extended cutting life. The segmented rim provides open airflow channels to prevent overheating during dry cuts, while naturally clearing away dust and debris to maintain consistent contact with the workpiece.

These blades support both wet and dry applications and carry a maximum speed rating of 13,300 RPM for spark-free operation. Tool compatibility is broad thanks to the default 7/8-inch arbor, which comes with two reducing rings measuring 20mm (0.87-inch) and 16mm (5/8-inch) so you can mount them directly onto most angle grinders and tile saws without hunting for separate hardware.

As a 4-1/2 inch segmented disc, cutting depth is naturally limited by the small diameter, making it unsuitable for thick slabs or deep trenching. While the bonding matrix is designed for materials like porcelain tile, brick, concrete, and granite, the segmented perimeter creates an aggressive cut that may not leave the micro-smooth edge of a dedicated continuous-rim tile blade.

Verdict: This two-pack is an excellent, practical choice for anyone needing durable, multi-material blades for an angle grinder. It offers versatile arbor fitment, solid segment height, and reliable performance across dry and wet masonry jobs.

• Blade Diameter: 4-1/2 inches
• Segment Height: 10mm
• Core Material: High-strength hardened alloy steel
• Arbor Size: Standard 7/8 inch
• Included Reducing Rings: 20mm (0.87 inch) and 16mm (5/8 inch)
• Maximum Speed: 13,300 RPM
• Cutting Modes: Wet and Dry
• Package Quantity: 2 blades

A great fit if you:

• Need a multi-material blade for cutting concrete, granite, brick, or porcelain tile.
• Use an angle grinder or tile saw with a 7/8-inch, 20mm, or 5/8-inch arbor.
• Want the flexibility to cut either dry or wet depending on the workspace.
• Prefer taller 10mm diamond segments for added cutting life.

Consider something else if you:

• Require large-diameter blades for deep structural masonry cuts.
• Need a continuous-rim design specifically for delicate, chip-sensitive glass cutting.

What materials can these blades cut?
They are designed to cut through concrete, granite, brick, and porcelain tile.

Can these blades be used for both dry and wet cutting?
Yes, they are engineered to work equally well in both dry and wet conditions.

What arbor sizes do these blades fit?
The blades have a standard 7/8-inch arbor and include two reducing rings for 20mm (0.87-inch) and 16mm (5/8-inch) tool spindles.

What is the maximum operating speed?
These blades are rated for safe operation up to 13,300 RPM.