20 flexible abrasive discs foam-backed 3M - diameter 150mm

3M 20 Hookit Flexible Foam Backing Abrasive Discs Ø150 mm – Ref. 33538 (Grit P400)

The 3M Hookit 33538 soft foam abrasive disc is specially designed for sanding/blending applications on primers, paints, and plastics: suitable for manual or machine use, dry or wet.

Features

• Brand: 3M
• Manufacturer Reference: 33538
• Description: Soft foam abrasive disc with Hookit™ attachment
• Diameter: 150 mm (≈ 6″)
• Grit: P400 (FEPA)
• Body: soft foam backing + aluminum oxide abrasive
• Usage: manual or machine, dry or wet use
• Typical Packaging: 20 discs / box

Advantages

• The soft foam adapts to irregular surfaces, ensuring constant contact and a uniform finish.
• Wet or dry use, allowing for more flexibility on primer, paint, and plastic.
• Hookit™ attachment for quick and tool-free disc changes.
• Excellent dust and water evacuation thanks to laser perforation across the entire disc.

Typical Applications

• Final sanding of DA primer (P400 grit sanding) before applying 2K basecoat.
• Preparation of bumpers or plastic parts before painting.
• Local blending, matting, or smoothing before finishing treatment.

Usage Tips

1. Ensure the pad (or machine) is compatible with a Ø150 mm disc and Hookit™ attachment.
2. Mount the 33538 disc, ensuring the surface is clean and free of contaminants.
3. For dry use: sand with light pressure, in regular cross movements.
4. For wet use: soak or spray water, sand with a suitable tool, then dry thoroughly before the next step.
5. After use, check for any disc deterioration and replace if necessary to maintain finish quality.

Important: This product is designed for professional industrial use. Wear appropriate protective equipment (goggles, dust mask) during sanding.

For Your Body Shop

With the 3M Hookit 33538 disc, you benefit from a soft foam backing specifically designed for body shop work and interventions on primer, paint, or plastic. Its 150 mm size allows for quick sanding of large surfaces while the P400 grit offers a reliable finish before color application. Being compatible with wet or dry use, this disc easily integrates into your paint preparation processes.

FAQ

Can it be used on already applied paint finish?

The P400 disc is mainly intended for primer or rough sanding. For paint finish or polishing, it is preferable to switch to a finer grit (e.g., P800 or P1500).

Is it suitable for manual use only?

No, the tool is designed for manual or machine use.

Should I sand dry or wet?

Both uses are possible. Wet sanding is often preferable to reduce dust and improve the finish, but make sure to dry the surface thoroughly before painting.{index=12}

Reference: 33538 — Ø 150 mm — Grit: P400

Technical information is provided for guidance only. Please check compatibility with your equipment and usage conditions before purchase or application.

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