Diablo DCF045036S04G 4-1/2 Inch Fiber Disc, Aluminum Oxide, 36 Grit , 4-Pack

The Diablo DCF045036S04G 4-1/2 Inch Fiber Disc is a 36-grit abrasive fiber disc made for fast material removal, shaping, and blending. This is a fiber disc designed for grinding and surface prep with an angle grinder. Model Number: DCF045036S04G. If you are cleaning up welds, removing stock, or smoothing metal before the next step, this is the kind of extra-coarse disc that gets right to work.

What makes this disc useful is the balance between aggressive cut and practical disc life. Diablo calls out a premium aluminum oxide blend, and that matters because aluminum oxide is a proven abrasive for general-purpose grinding and sanding work. In real use, 36 grit gives you a rougher, faster-cutting surface that is better suited to shaping and blending than fine finishing. It is a good fit when the priority is removing material instead of leaving a polished final surface.

This disc is built around a fiber backing with a center mount attachment method. That setup is common for grinder-based abrasive work because it keeps the disc flat and stable when paired with the proper backing pad. Diablo also notes a high-strength resin bond between the abrasive and backing, which is the kind of detail that matters once heat and pressure build up during longer grinding sessions. A weak bond sheds grit early. A stronger bond helps the disc keep cutting longer.

On the job, the Diablo DCF045036S04G 4-1/2 Inch Fiber Disc is aimed first at metal work. It is specifically called out for shaping and blending metal, and it is also made for grinding, polishing, smoothing welds, and general stock removal. Supported materials include metal, wood, plastics, and fiberglass, which makes this a useful shop consumable when you need one disc type that can handle a range of rough-prep tasks.

Size matters with grinder accessories, and this one is a 4-1/2 inch disc, which lines up with one of the most common angle grinder sizes in the field and in the shop. That makes replacement and tool matching straightforward for users already running a 4-1/2 inch grinder. One practical note: a backing pad is required to attach the fiber disc to a sanding or grinder setup. That is worth knowing before you order, especially if you are replacing flap discs or wheels and do not already have the right pad on hand.

This pack includes four discs, so it makes sense for small fabrication jobs, maintenance work, auto repair, and general metal prep where you want a few aggressive discs ready to go without buying a bulk box. For contractors, welders, mechanics, metal fabricators, and serious DIY users, this is a straightforward abrasive accessory that does the rough work well. If your goal is quick removal and blending with a standard angle grinder, this disc is the right kind of coarse, not a finish disc pretending to be one.

Diameter 4-1/2 in. Grit 36 Sanding Grade Ultra Coarse / Extra Coarse Abrasive Material Aluminum Oxide Backing Material Paper Attachment Method Center Mount Package Quantity 4 Made In Switzerland

Diablo DCF045036S04G 4-1/2 Inch Fiber Disc for fast, rough prep work

This is a no-nonsense coarse grinder disc for users who want quick metal removal and weld cleanup without paying for fluff.

• Who it's for: Welders, fabricators, mechanics, and DIY users doing metal shaping, blending, and surface prep with a 4-1/2 inch angle grinder.
• Why it stands out: The aluminum oxide abrasive, aggressive 36-grit cut, and fiber disc format make it a solid choice for rough work where speed matters more than finish.
• Worth knowing: This is a roughing disc, not a finishing disc, and you need the right backing pad to run it.

• What tool is this disc designed for? It is designed for use with an angle grinder.
• What materials can it be used on? It is primarily for shaping and blending metal, and it can also be used on wood, plastics, and fiberglass.
• Is this a finishing disc? No. With a 36-grit extra-coarse surface, it is better suited to aggressive stock removal, blending, and rough prep.
• Does it need anything else to mount? Yes. A backing pad is needed to attach the fiber disc to a sanding or grinder setup.