Roll
3M
3M Cubitron II 34446 Hookit Sheet Roll 70 mm x 12 m 180+ Grit
No reviews yet
WARNING: Cancer & Reproductive Harm
This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm.Tap for details → P65Warnings.ca.gov
Authorized dealer
Ships today
30-day returns
Overview
Built for the job.
Our Cubitron™ II Hookit™ clean sanding sheet rolls 737U combines the highest 3M™ technology for automotive repair. Its long-lasting triangular shaped grain and multi-hole pattern for superior dust extraction make it ideal for paint removal, rough body filler shaping, fine feather-edging or final prep before blending…
Cubitron™ II 34446 737U is a 70 mm × 12 m roll of 180‑plus grit aluminum‑oxide sanding sheet, designed for uniform material removal and surface preparation in automotive refinishing. The flexible sheet is ideal for shaping filler, smoothing primer, and preparing a variety of substrates before paint application.
The abrasive’s consistent 180+ grit delivers smooth, even removal, allowing 10–13 coats per roll on common body‑shop materials such as steel, aluminum, galvanized metal, fiberglass, FRP, plastics, and e‑coat finishes. Its high‑quality aluminum‑oxide composition provides long‑lasting performance and reliable grit retention, reducing the need for frequent sheet changes and improving overall workflow efficiency.
Due to the listed GHS hazards—acute toxicity, aspiration risk, carcinogenic potential, and skin/eye irritation—use requires appropriate personal protective equipment, including eye protection and a respirator, and work should be performed in a well‑ventilated area.
Why Pros Choose 3M MMM
- Cubitron™ II cuts 30 percent faster and lasts 2x longer than other premium abrasives
- Clean sanding multi-hole pattern delivers excellent dust extraction
- 3M™ Hookit™ hook-and-loop style abrasive attaches firmly, removes quickly for fast change-out
- Kiss-cut scoring technology allows for use in multiple sheet lengths
- Precision shaped grain (PSG) technology employs micro replication to obtain sharp and uniformly sized triangular grain
- Triangular PSG abrasive grains are super-sharp and cut exceptionally fast
- Sharp tips of PSG maintains abrasive life for a long time
- Sharper cutting surface means less pressure is required for reduced friction and wear
- Grains are electrostatically oriented on abrasive surface for efficient cut, even wear
- Cuts faster the premium abrasives
How to Use
For use on stripping paint to metal, shaping and sanding plastic filler and scuff sanding
- Clean the substrate (ABS, aluminum, bare metal, e‑coat, fiberglass, FRP, galvanized, OEM, plastic, primer, SMC, or steel) to remove dust, oil, and loose material.
- Apply the 3M Cubitron™ II 34446 sanding sheet to the prepared surface, ensuring full contact and even pressure.
- Perform 10 – 13 uniform sanding passes, maintaining consistent speed and overlapping each pass to achieve the specified 180 + grit finish.
- After sanding, remove residue with a clean lint‑free cloth or vacuum; no additional curing time is required.
Compatibility
Compatible substrates: Aluminum, Body Filler.
Specifications
| Part No. | 34446 |
|---|---|
| Product Line | MMM |
| MFR Model | 34446 |
| Standard/Approvals | OSHA 29 CFR 1910.1200 |
| Application | For use on stripping paint to metal, shaping and sanding plastic filler and scuff sanding |
| Manufacturer | 3M Products |
| Alternate Part Number-1 | 60455101448 |
| UPC | 051131344464 |
| Brand | Cubitron™ II |
| Maximum Sale Quantity | 5 |
| Maximum Sale Day | 7 |
| Grit | 180+ |
| Abrasive Material | Aluminum Oxide |
| Width (mm) | 70 |
| Series | 737U |
| Color | Purple |
| Attachment Type | Hookit™ Hook and Loop |
- Grit
- 180+
- Width
- 70 mm
- Length
- 12 m
- Abrasive
- Aluminum oxide
- Compatible Substrates
- ABS, aluminum, bare metal, e‑coat, fiberglass, FRP, galvanized, OEM, plastic, primer, SMC, steel
- Number of Coats
- 10–13
About 3M
3M is a global leader in abrasives, masking, and body repair products. Trusted by OEM collision centers for high-performance prep and finishing solutions.
Frequently Asked Questions
What substrates can I sand with Cubitron™ II 34446 737U?
The sheet is compatible with ABS, aluminum, bare metal, e‑coat, fiberglass, FRP, galvanized steel, OEM panels, plastic, primer, SMC and steel surfaces.
What personal protective equipment is required when using this abrasive?
Use eye protection and a respirator to guard against dust and aerosolized particles. The material is classified for acute toxicity, aspiration hazards, carcinogenicity, eye damage, organ toxicity, reproductive toxicity, respiratory irritation, and skin corrosion.
How many coats can I apply before sanding or painting over the sanded surface?
Typical applications call for 10 – 13 coats before the surface is ready for subsequent sanding or paint work.
Documents & Safety
Warning: This abrasive product contains materials that may cause serious health hazards. Required safety equipment includes eye protection and respiratory protection. Potential hazards include eye damage, skin irritation, respiratory issues, and exposure to materials that may cause cancer or reproductive harm. Use in well-ventilated areas. If particles get in eyes, flush immediately with water. If skin irritation occurs, wash with soap and water. Always refer to the full SDS before use.
Why Buy from autofxmart
- Authorized distributor — authentic, factory-fresh stock.
- Fast US shipping — most orders ship within 1 business day.
- 30-day returns — buy with confidence.
- Pro-shop pricing — bulk discounts available on request.
- Expert support — questions? Email us at support@autofxmart.com.
How to apply
Steps
1Pick the right grit for the stage of work.
2Mount on your sander or backing block.
3Work evenly and let the abrasive cut.
4Step through finer grits to refine.
5Blow off and wipe the surface before the next step.
Specifications
Full data
Frequently asked
Good to know
3M Products MMM is compatible with Aluminum, Body Filler. Always ensure the surface is properly cleaned, degreased, and sanded before application to achieve the strongest adhesion and a professional finish.
Most in-stock orders for 3M Products MMM ship the same or next business day from our US warehouse. Expedited options are available at checkout. Freight-class items may require an additional 1–2 days for carrier pickup.
Yes. autofxmart is an authorized distributor of 3M Products. Every unit is factory-fresh, sealed, and backed by the manufacturer's standard warranty. If you have a concern, contact support@autofxmart.com and we will make it right.
The MPN for 3M Products MMM is 34446. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
What Our Customers Say
Thanks! Your review was submitted and will appear after moderation.
No reviews yet — be the first to review this product.
