120 Grit Flap Discs

Heavy-Duty Material Removal Demands Professional 120-Grit Flap Discs

Power through your toughest metalworking challenges with our 120-grit flap discs. These aggressive abrasives deliver the raw cutting power your demanding projects require while maintaining the control you need for precision work.

What Is a 120-Grit Flap Disc?

A 120-grit flap disc is an abrasive tool designed for precision grinding, blending, and finishing on metal surfaces. Unlike traditional grinding wheels, flap discs are made of overlapping abrasive flaps bonded to a central hub. These flaps wear down gradually during use, continuously exposing fresh abrasive material for consistent cutting performance.

The 120-grit rating places this disc in the medium-to-fine range, ideal for applications where you need effective material removal with a smoother finish. It strikes a perfect balance between stock removal and surface refinement—aggressive enough to tackle rust, welds, and edges, but controlled enough to prep surfaces for coatings or finer finishing.

Engineered for use with angle grinders, 120-grit flap discs conform to curved or uneven surfaces, making them especially useful on complex fabrications or detailed metalwork. Whether you're working with stainless steel, carbon steel, or aluminum, this grit level helps you achieve a professional finish without sacrificing efficiency.

Who Is the 120-Grit Flap Disc Best For?

This flap disc is built for professionals and serious DIYers who demand reliability, performance, and precision in their metalworking tools. Whether you're a fabricator, welder, automotive technician, or repair specialist, the 120-grit flap disc is an essential abrasive when you need to remove material quickly without sacrificing surface quality. It's particularly suited for those working on detailed projects that require a smooth finish after heavy stock removal—like prepping metal for paint or powder coat, grinding down weld seams, or cleaning up corroded parts.

If your workflow regularly includes shaping contours, reaching tight spots, or finishing complex metal pieces where control and consistency matter, this tool belongs in your lineup. It's a trusted solution for anyone who values a balance of cutting power and finesse.

Built For Your Most Challenging Applications

Our 120-grit flap discs excel at:

• Weld Grinding: Remove excess weld material quickly while maintaining precise control over surface contours and joint profiles
• Rust & Corrosion Removal: Strip away years of oxidation from metal surfaces, revealing clean base material ready for treatment
• Heavy Stock Removal: Eliminate deep scratches, pitting, and surface imperfections that lighter grits can't handle
• Edge Deburring: Clean sharp edges on fabricated parts with consistent pressure and controlled material removal

Why Professionals Trust Our 120 Grit Performance

We've engineered these flap discs to outperform standard grinding wheels where precision matters most. You'll experience superior results from the first use:

• Individual cloth flaps conform to irregular surfaces, reaching areas that rigid wheels miss
• Self-sharpening design maintains consistent cutting action throughout the disc's life
• Cooler operation reduces heat buildup that can damage workpieces or cause discoloration 
• Reduced vibration and smoother operation minimize operator fatigue during extended use

Flap Disc Comparison Guide

Order Your 120-Grit Flap Discs From Benchmark Abrasives Today

Ready to upgrade your surface prep and metal finishing?

Benchmark Abrasives’ 120-grit flap discs are built to handle tough jobs with precision and control. Whether you're grinding welds, removing rust, or deburring sharp edges, these discs deliver consistent results with every pass.

Don’t settle for less—choose abrasives that work as hard as you do. Order now and give your projects the professional finish they deserve.

Shop now and experience the performance difference with Benchmark Abrasives.

Frequently Asked Questions

What is a 120-grit flap disc used for?

A 120-grit flap disc is used for light grinding, blending, and surface finishing. It removes material efficiently while leaving a smoother finish than coarser grits.

What is the best grit for flap discs?

The best grit depends on the task. Use lower grits (40–60) for heavy stock removal, mid-range grits (80–100) for blending, and higher grits (120 and up) for finishing work.

What is grit in a flap disc?

Grit refers to the size of the abrasive particles on the disc. Lower numbers mean coarser abrasives for aggressive grinding, while higher numbers indicate finer particles for smoother finishes.

Is 80 or 120 grit rougher?

80-grit is rougher than 120. It removes material faster but leaves a more textured surface.