3M 366L Hookit Microfinishing Film Disc – 5″ 40MIC, A/O, Type D
3M™ 366L Hookit™ Microfinishing Film Discs are precision-engineered abrasive film discs with aluminum oxide (A/O) mineral and a durable polyester backing, designed for consistent surface refinement in metal, wood, and composite applications. The Hookit™ system allows quick disc changes, reducing downtime. 3M Hookit Microfinishing Film Disc
Key Features
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Grade: 40MIC (approx. P400–P600 grit equivalent) for microfinishing and precision sanding
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Size: 5 inch (127 mm)
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Backing: Durable polyester film
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Attachment Type: Hookit™ (hook-and-loop) for quick attachment/removal
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Mineral: Aluminum Oxide (A/O)
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Application Type: Type D – ideal for uniform and consistent finish
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Durability: Resistant to edge-wear, tearing, and loading
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Finish: Provides a fine and controlled finish with reduced swirl marks. 3M Hookit Microfinishing Film Disc
Best For
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Automotive – Paint preparation, clear coat leveling
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Metalworking – Finishing stainless steel, aluminum, and mild steel
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Wood & Composites – Uniform sanding of curved and flat surfaces
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Precision Finishing – In OEMs and rework centers. 3M Hookit Microfinishing Film Disc
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