BHA 4.5" x1/4" x7/8" Metal Grinding Wheels for Angle Grinder - 5

The BHA 4.5-inch grinding wheel pack provides five Type 27 depressed center discs designed for heavy stock removal on metal surfaces. Built for welders, fabricators, and metalworkers, these wheels tackle tasks like grinding down fresh welds, taking off mill scale, removing rust, and stripping sharp burrs before welding.

Each disc measures 4-1/2 inches across with a 1/4-inch thickness, giving it enough body to handle aggressive stock removal without falling apart quickly. The abrasive composition relies on coarse A24 aluminum oxide held together in a hard resinoid bond, which helps the disc retain a workable edge shape through extended use. Integrated fiberglass reinforcement provides side-load strength, keeping the wheel stable under firm downward and angled pressure.

Compatibility is straightforward for standard workshop setups. These discs feature a standard 7/8-inch arbor hole and are rated to operate safely at speeds up to 13,300 RPM on any standard 4.5-inch angle grinder. The depressed center design helps clear the tool guard while keeping the disc flat against the workpiece to minimize wobble, vibration, and chatter during use.

Keep in mind that the extra coarse 24-grit formulation is engineered specifically for fast material removal rather than fine finishing, so work requiring a polished surface will need additional steps. Furthermore, these discs are formulated for ferrous metals such as carbon steel, stainless steel, and cast iron, rather than non-ferrous materials.

Verdict: This five-pack is a dependable pick for fabricators and welders who need fast, aggressive stock removal on ferrous metals. If you need steady, balanced grinding wheels for weld prep, smoothing rough joints, or clearing heavy scale on a standard 4.5-inch angle grinder, this set fits the bill.

• Pack Quantity: 5 discs
• Wheel Diameter: 4-1/2 inches
• Thickness: 1/4 inch
• Arbor Size: 7/8 inch
• Shape: Type 27 depressed center
• Abrasive Material: A24 Aluminum oxide (resinoid bond)
• Reinforcement: Fiberglass
• Maximum Speed: 13,300 RPM
• Material Compatibility: Carbon steel, stainless steel, cast iron, ferrous metals

A great fit if you:

• Need to grind down weld beads, bevel edges, or remove heavy rust on steel projects.
• Use a standard 4.5-inch angle grinder with a 7/8-inch arbor rated up to 13,300 RPM.
• Work regularly with carbon steel, stainless steel, or cast iron.

Consider something else if you:

• Need a fine finishing or polishing disc rather than a coarse 24-grit grinding wheel.
• Work primarily with non-ferrous metals.
• Operate angle grinders that require different diameter discs or arbor sizes.

What metals can these grinding wheels be used on?
These discs are designed for carbon steel, stainless steel, cast iron, and other ferrous metals to grind down welds, burrs, rust, and mill scale.

What size grinder and arbor do these wheels fit?
They fit standard 4.5-inch angle grinders with a 7/8-inch arbor, and the Type 27 depressed center profile clears standard grinder guards.

What is the maximum operating speed?
The grinding wheels are rated for speeds up to 13,300 RPM.