3M coated 769F Type 29 flap disc uses ceramic precision-shaped grain as the abrasive material and has a diameter of 4 1/2 in. 3M incorporates this ceramic precision-shaped grain material into the flap disc forming a grit of 40+. The arbor attachment allows for easy mounting to the tool or pad. All abrasive products that rotate or spin, such as the ones in this category, have a maximum speed at which you can run them. This 3M flap disc can be run at a maximum speed of 13300 RPMs. The 3M flap disc uses fiberglass for the backing plate.
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