3M Cubitron™ II Marine Sanding Disc
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
3M Cubitron™ II Marine Sanding Disc is built for efficient marine surface prep and repair sanding. Using precision-shaped ceramic mineral grains with a Hookit™ attachment system, it’s designed to help deliver a finer, more uniform finish while reducing dust with a multi-hole pattern.
Key Features
- Triangular shaped ceramic mineral grains designed for faster cutting and consistent performance
- Hole pattern supports dust extraction by allowing airflow/vacuum pickup through the disc
- Hookit™ attachment system for convenient disc mounting on compatible pads
- Designed for marine applications including bottom paint removal and gelcoat/blister repair
Intended Use
- Marine surface preparation
- Bottom paint removal
- Gelcoat repair sanding
- Blister repair sanding
Product Details
- Product: 3M Cubitron™ II Marine Sanding Disc
- SKU: 71-31371
- Disc type/attachment: Hookit™ attachment system
- Abrasive grade: 80+
- Disc diameter: 6 in
- Material/grain technology: triangular shaped ceramic mineral grains
- Dust control: multi-hole disc pattern
- Quantity: 50 discs/carton (as listed in 3M marine solutions catalog)
- Weight (variant): 481 grams
Parts Desk Insights
Best Use Case: Use for marine repair sanding where you want dependable cut performance and dust extraction during prep work (e.g., before coating/finishing steps).
Common Issues: If you notice reduced dust pickup, confirm the disc is seated correctly on the compatible Hookit™ pad and that your vacuum/extraction setup is functioning properly; worn discs may also load up or cut less efficiently.
Related Products & Accessories
- Browse sanding abrasives (Cubitron™ II marine discs) - Use this category to find matching grits and disc sizes for your marine prep jobs.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.