3M 366L Hookit Microfinishing Film Disc – 5″ 40MIC, A/O, Type D

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

• Grade: 40MIC (approx. P400–P600 grit equivalent) for microfinishing and precision sanding

• Size: 5 inch (127 mm)

• Backing: Durable polyester film

• Attachment Type: Hookit™ (hook-and-loop) for quick attachment/removal

• Mineral: Aluminum Oxide (A/O)

• Application Type: Type D – ideal for uniform and consistent finish

• Durability: Resistant to edge-wear, tearing, and loading

• Finish: Provides a fine and controlled finish with reduced swirl marks. 3M Hookit Microfinishing Film Disc

Best For

• Automotive – Paint preparation, clear coat leveling

• Metalworking – Finishing stainless steel, aluminum, and mild steel

• Wood & Composites – Uniform sanding of curved and flat surfaces

• Precision Finishing – In OEMs and rework centers. 3M Hookit Microfinishing Film Disc